Editing Yu-Gi-Oh! Duel Monsters (video game)

{{VGInfobox
| image name       = YugiohDuelMonstersGB.jpg
| kanji name       = {{Ruby|遊戯王|ユウギオウ}}デュエルモンスターズ
| romaji name      = Yugiō Dyuerumonsutāzu
| developer        = [[Konami]]
| publisher        = Konami
| designer         = 
| series           = ''[[Yu-Gi-Oh! Duel Monsters (video game series)|Yu-Gi-Oh! Duel Monsters]]''
| platform         = [[wikipedia:Game Boy|Game Boy]]
| release date     = {{flag|Japan}} December 16, 1998<ref name="konami dm1 page">http://www.konami.jp/products/yugioh_dm1_gb/</ref>
| genre            = Card game
| rating           = 
| galleries        = [[Gallery of Yu-Gi-Oh! Duel Monsters cards|Card gallery]]
| promo cards page = Yu-Gi-Oh! Duel Monsters promotional cards
}}
'''''Yu-Gi-Oh! Duel Monsters''''' is the second ''Yu-Gi-Oh!'' video game, following ''[[Yu-Gi-Oh! Monster Capsule: Breed and Battle]]''. It is the first game in the [[Yu-Gi-Oh! Duel Monsters (video game series)|''Duel Monsters'' series]], followed by ''[[Yu-Gi-Oh! Duel Monsters II: Dark duel Stories]]'', and the only game released for the [[wikipedia:Game Boy|Game Boy]]. It was published in Japan by [[Konami]] on December 16, [[1998]].<ref name="konami dm1 page" />

==Cards==
{{Main|List of ''Yu-Gi-Oh! Duel Monsters'' cards|Gallery of ''Yu-Gi-Oh! Duel Monsters'' cards}}
[[File:Takahashi's DM1 sketches.png|thumb|right|300px|Thirteen of the cards Takahashi designed for the game.]]
''Yu-Gi-Oh! Duel Monsters'' features 365 cards. This consists of:

* 300 [[Monster Card|monsters]] and 50 [[Spell Card|Magic Cards]] accessible during normal gameplay:
** 99 monsters and 12 Magic Cards from the [[Yu-Gi-Oh! (manga)|''Yu-Gi-Oh!'' manga]], up to Duel 91: {{chapter|Yu-Gi-Oh!|91}}.
** Card #013: "[[Tyhone (DM1)|Tyhone]]", which previously appeared in ''[[Yu-Gi-Oh! Monster Capsule: Breed and Battle]]''
** 200 monsters and 38 Magic Cards, original to the game
* 15 secret monsters, at least 13 of which were designed by [[Kazuki Takahashi]].<!-- "Super War-lion" and "Yamadron" are the uncounted. --> These can only be obtained through a [[#Passwords|secret password menu]] or as [[#Prizes|prizes]] at the [[Yu-Gi-Oh! Duel Monsters National Tournament|national tournament]].

{{clear}}

==Game options==
[[File:YugiohDuelMonstersGB-2.png|thumb|right|The title screen and main menu]]
The following options are available at the main menu:
* '''[[#Campaign|Campaign]]''' (キャンペーン ''kyanpēn''): the game's story mode. Face AI opponents.
* '''[[#Versus|Versus]]''' (たいせん ''taisen''): battle other players, using the [[wikipedia:Game Link Cable|Game Link Cable]].
* '''[[#Trade|Trade]]''' (トレード ''torēdo''): trade with other players via the Game Link Cable.
* '''[[#Records|Records]]''' (せいせき ''seiseki''): statistics and other information about the player.

There is also a [[#Passwords|password menu]], which is only accessible by entering a secret code at the main menu.

===Campaign===
The player must defeat each character in a stage five times to advance to the next stage. A character that has been defeated five times can be Dueled additional times for more cards. Defeating [[Maximillion Pegasus (Duel Monsters 1)|Maximillion Pegasus]] five times causes the ending credits to roll. After that an additional Dark Stage appears, with [[Yami Yugi (Duel Monsters 1)|Yami Yugi]] as an opponent.

Here are the list of characters that a player may Duel against:

{| class="wikitable"
|-
! scope="col" | Stage
! scope="col" | Image
! scope="col" | Opponents
|-
! scope="row" | Stage 1: Ship
| [[File:DM ST1.png|160px|Stage 1: Ship]]
| 
<gallery widths="160" heights="144" mode="nolines">
Yugi Muto-G1.png    | [[Yugi Muto (Duel Monsters 1)|Yugi Muto]]
Hiroto Honda-G1.png | [[Tristan Taylor (Duel Monsters 1)|Tristan Taylor]]
DM jonouchi.png     | [[Joey Wheeler (Duel Monsters 1)|Joey Wheeler]]
Ryou Bakura-G1.png  | [[Ryou Bakura (Duel Monsters 1)|Ryou Bakura]]
</gallery>
|-
! scope="row" | Stage 2: Duelist Kingdom
| [[File:DM ST2.png|160px|Stage 2: Duelist Kingdom]]
| 
<gallery widths="160" heights="144" mode="nolines">
Weevil Underwood-DM1.png | [[Weevil Underwood (Duel Monsters 1)|Weevil Underwood]]
Mai Valentine-DM1.png    | [[Mai Valentine (Duel Monsters 1)|Mai Valentine]]
Rex Raptor-DM1.png       | [[Rex Raptor (Duel Monsters 1)|Rex Raptor]]
Mako Tsunami-DM1.png     | [[Mako Tsunami (Duel Monsters 1)|Mako Tsunami]]
Seto Kaiba-DM1.png       | [[Seto Kaiba (Duel Monsters 1)|Seto Kaiba]]
Mokuba Kaiba-DM1.png     | [[Mokuba Kaiba (Duel Monsters 1)|Mokuba Kaiba]]
Puppeteer-DM1.png        | [[Puppeteer of Doom (Duel Monsters 1)|Puppeteer of Doom]]
PaniK-DM1.png            | [[PaniK (Duel Monsters 1)|PaniK]]
Bandit Keith-DM1.png     | [[Bandit Keith (Duel Monsters 1)|Bandit Keith]]
</gallery>
|-
|-
! scope="row" | Stage 3: Simon Muran
| [[File:DM ST3.png|160px|Stage 3: Simon Muran]]
| 
<gallery widths="160" heights="144" mode="nolines">
DM Siamun.png | [[Simon Muran (Duel Monsters 1)|Simon Muran]]
</gallery>
|-
|-
! scope="row" | Final Boss
| [[File:DM ST4.png|160px|Final Boss]]
| 
<gallery widths="160" heights="144" mode="nolines">
DM Pegasus.png | [[Maximillion Pegasus (Duel Monsters 1)|Maximillion Pegasus]]
</gallery>
|-
|-
! scope="row" | Dark Stage
| [[File:DM ST5.png|160px|Dark Stage]]
| 
<gallery widths="160" heights="144" mode="nolines">
DM yami yugi.png | [[Yami Yugi (Duel Monsters 1)|Yami Yugi]]
</gallery>
|-
|}

===Versus===
Players can battle other players, who have the same game, using the [[wikipedia:Game Link Cable|Game Link Cable]] via the Versus menu. The Deck can be altered before the battle, from this screen.

After a battle, the winner can [[#Ante|take one card from the opponent's trunk]]. After every ten battles, the player is [[#Communication bonuses|awarded a certain card]].

===Trade===
Players can trade cards with other people who have a copy of the game, via the Game Link Cable.

From the trade screen, the player has three options, "chest", "check card" and "exchange card". The player must open the "chest" menu and select which cards they wish to trade. They can review the cards they have selected in the "check card" screen. The cards are traded when both players select "exchange card".

[[Communication Fusion]]s can be conducted by trading certain cards.

===Records===
The records screen shows the player's name and communication battle statistics.

==Obtaining cards==
=== Starter Deck ===
The player starts the game with a 40-card Starter Deck which includes 33 Monster Cards, selected randomly from a pool of 100 monsters, as well as seven Magic Cards, which are always the same.<ref>http://datacrystal.romhacking.net/wiki/Yu-Gi-Oh!_Duel_Monsters:ROM_map#Starter_Deck_-_Random_card_pool</ref>
{{Decklist|Starter Deck
| monsters = 
* 005. [[Ryu-kishin (DM1)|Ryu-kishin]]
* 008. [[Mushroom Man (DM1)|Mushroom Man]]
* 009. [[Shadow Specter (DM1)|Shadow Specter]]
* 024. [[Skull Servant (DM1)|Skull Servant]]
* 029. [[Mountain Warrior (DM1)|Mountain Warrior]]
* 045. [[Oscillo Hero 2 (DM1)|Oscillo Hero #2]]
* 048. [[Sangan (DM1)|Sangan]]
* 058. [[Kuriboh (DM1)|Kuriboh]]
* 075. [[Man-eating Plant (DM1)|Man-eating Plant]]
* 101. [[Wings of Wicked Fl (DM1)|Wings of Wicked Fl]]
* 102. [[Mask of Darkness (DM1)|Mask of Darkness]]
* 105. [[Tomozaurus (DM1)|Tomozaurus]]
* 107. [[Kageningen (DM1)|Kageningen]]
* 123. [[Dark Plant (DM1)|Dark Plant]]
* 129. [[Nemuriko (DM1)|Nemuriko]]
* 130. [[Weather Control (DM1)|Weather Control]]
* 134. [[Mystical Capture C (DM1)|Mystical Capture C]]
* 139. [[B.eye Silv. Zombie (DM1)|B.eye Silv. Zombie]]
* 140. [[Toad Master (DM1)|Toad Master]]
* 142. [[Flame Manipulator (DM1)|Flame Manipulator]]
* 143. [[Chronolord (DM1)|Chronolord]]
* 144. [[Wind Djinn (DM1)|Wind Djinn]]
* 145. [[Phantom Thief (DM1)|Phantom Thief]]
* 147. [[Monster Egg (DM1)|Monster Egg]]
* 148. [[Sinister Shadow (DM1)|Sinister Shadow]]
* 152. [[The Melting Red Sh (DM1)|The Melting Red Sh]]
* 154. [[Fire Reaper (DM1)|Fire Reaper]]
* 155. [[Larvas (DM1)|Larvas]]
* 157. [[Firegrass (DM1)|Firegrass]]
* 158. [[Man Eater (DM1)|Man Eater]]
* 159. [[Dig Beak (DM1)|Dig Beak]]
* 160. [[M-warrior 1 (DM1)|M-warrior #1]]
* 161. [[M-warrior 2 (DM1)|M-warrior #2]]
* 167. [[Ancient Jar (DM1)|Ancient Jar]]
* 173. [[Dark Prisoner (DM1)|Dark Prisoner]]
* 174. [[Hurricail (DM1)|Hurricail]]
* 176. [[Fire Eye (DM1)|Fire Eye]]
* 177. [[Monsturtle (DM1)|Monsturtle]]
* 179. [[Phantom Dewan (DM1)|Phantom Dewan]]
* 180. [[Arlownay (DM1)|Arlownay]]
* 181. [[Dark Shade (DM1)|Dark Shade]]
* 182. [[Masked Clown (DM1)|Masked Clown]]
* 183. [[Lucky Trinket (DM1)|Lucky Trinket]]
* 184. [[Genin (DM1)|Genin]]
* 185. [[Eyearmor (DM1)|Eyearmor]]
* 187. [[Gate Deeg (DM1)|Gate Deeg]]
* 188. [[Synchar (DM1)|Synchar]]
* 189. [[Fusionist (DM1)|Fusionist]]
* 190. [[Akakieisu (DM1)|Akakieisu]]
* 191. [[LaLa Li-oon (DM1)|LaLa Li-oon]]
* 192. [[Key Mace (DM1)|Key Mace]]
* 193. [[Turtle Tiger (DM1)|Turtle Tiger]]
* 194. [[Terra the Terrible (DM1)|Terra the Terrible]]
* 195. [[Doron (DM1)|Doron]]
* 196. [[Arma Knight (DM1)|Arma Knight]]
* 197. [[Mech Mole Zombie (DM1)|Mech Mole Zombie]]
* 198. [[Happy Lover (DM1)|Happy Lover]]
* 199. [[Penguin Knight (DM1)|Penguin Knight]]
* 200. [[Petit Dragon (DM1)|Petit Dragon]]
* 202. [[Air Marmot of Nefa (DM1)|Air Marmot of Nefa]]
* 203. [[Phantom Ghost (DM1)|Phantom Ghost]]
* 205. [[Dorover (DM1)|Dorover]]
* 206. [[Twin Long Rods 1 (DM1)|Twin Long Rods#1]]
* 207. [[Droll Bird (DM1)|Droll Bird]]
* 208. [[Petit Angel (DM1)|Petit Angel]]
* 209. [[Winged Cleaver (DM1)|Winged Cleaver]]
* 210. [[Hinotama Soul (DM1)|Hinotama Soul]]
* 211. [[Kaminarikozou (DM1)|Kaminarikozou]]
* 212. [[Meotoko (DM1)|Meotoko]]
* 214. [[B. Flame Kagemusha (DM1)|B. Flame Kagemusha]]
* 215. [[Flame Ghost (DM1)|Flame Ghost]]
* 218. [[Two-mouth Darkrule (DM1)|Two-mouth Darkrule]]
* 222. [[Midnight Fiend (DM1)|Midnight Fiend]]
* 226. [[Skull Stalker (DM1)|Skull Stalker]]
* 227. [[Hitodenchak (DM1)|Hitodenchak]]
* 228. [[Wood Remains (DM1)|Wood Remains]]
* 229. [[Hourglass of Life (DM1)|Hourglass of Life]]
* 232. [[Madjinn Gunn (DM1)|Madjinn Gunn]]
* 237. [[Haniwa (DM1)|Haniwa]]
* 238. [[Yashinoki (DM1)|Yashinoki]]
* 239. [[Vishwar Randi (DM1)|Vishwar Randi]]
* 240. [[The Drdek (DM1)|The Drdek]]
* 242. [[Candle of Destiny (DM1)|Candle of Destiny]]
* 243. [[Water Element (DM1)|Water Element]]
* 244. [[Dissolverock (DM1)|Dissolverock]]
* 245. [[Meda Bat (DM1)|Meda Bat]]
* 247. [[Root Water (DM1)|Root Water]]
* 253. [[Angelwitch (DM1)|Angelwitch]]
* 254. [[Embryonic Beast (DM1)|Embryonic Beast]]
* 261. [[Wicked Mirror (DM1)|Wicked Mirror]]
* 268. [[Sectarian of Secre (DM1)|Sectarian of Secre]]
* 271. [[Megirus Light (DM1)|Megirus Light]]
* 276. [[Ray & Temperature (DM1)|Ray & Temperature]]
* 279. [[King Fog (DM1)|King Fog]]
* 282. [[Mystical Sheep 2 (DM1)|Mystical Sheep #2]]
* 285. [[Serpent Marauder (DM1)|Serpent Marauder]]
* 289. [[Change Slime (DM1)|Change Slime]]
* 292. [[Psychic Kappa (DM1)|Psychic Kappa]]
* 298. [[Wicked Dragon with (DM1)|Wicked Dragon with]]
* 300. [[Kurama (DM1)|Kurama]]
| magic    = 
* 337. [[Raigeki (DM1)|Raigeki]]
* 338. [[Mooyan Curry (DM1)|Mooyan Curry]]
* 339. [[Red Medicine (DM1)|Red Medicine]]
* 343. [[Sparks (DM1)|Sparks]] ×2
* 344. [[Hinotama (DM1)|Hinotama]]
* 350. [[Dark-piercing Ligh (DM1)|Dark-piercing Ligh]]
}}

===Opponent drops===
When an opponent is defeated, the player is given a card.

Each opponent has a different list of cards the player can get for beating them, with each card on the list having an assigned probability of randomly obtaining it. See [[Joey Wheeler (Duel Monsters 1)#Drops|Joey Wheeler (''Duel Monsters 1'') § Drops]] for example.

===Victory bonuses===
Each opponent also has a list of cards the player obtains after defeating that opponent a number of times in multiples of ten, up to 100.

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Yugi Muto (Duel Monsters 1)|Yugi Muto]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 314 || [[Horn of the Unicor (DM1)|Horn of the Unicor]]
|-
| 20  || 350 || [[Dark-piercing Ligh (DM1)|Dark-piercing Ligh]]
|-
| 30  || 199 || [[Penguin Knight (DM1)|Penguin Knight]]
|-
| 40  || 161 || [[M-warrior 2 (DM1)|M-warrior #2]]
|-
| 50  || 114 || [[White Magical Hat (DM1)|White Magical Hat]]
|-
| 60  || 270 || [[Wetha (DM1)|Wetha]]
|-
| 70  || 118 || [[Supporter in the S (DM1)|Supporter in the S]]
|-
| 80  || 276 || [[Ray & Temperature (DM1)|Ray & Temperature]]
|-
| 90  || 039 || [[Curse of Dragon (DM1)|Curse of Dragon]]
|-
| 100 || 038 || [[Gaia The Fierce Kn (DM1)|Gaia The Fierce Kn]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Tristan Taylor (Duel Monsters 1)|Tristan Taylor]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 310 || [[Vile Germs (DM1)|Vile Germs]]
|-
| 20  || 312 || [[Silver Bow & Arrow (DM1)|Silver Bow & Arrow]]
|-
| 30  || 238 || [[Yashinoki (DM1)|Yashinoki]]
|-
| 40  || 300 || [[Kurama (DM1)|Kurama]]
|-
| 50  || 155 || [[Larvas (DM1)|Larvas]]
|-
| 60  || 180 || [[Arlownay (DM1)|Arlownay]]
|-
| 70  || 257 || [[Stone Armadiller (DM1)|Stone Armadiller]]
|-
| 80  || 174 || [[Hurricail (DM1)|Hurricail]]
|-
| 90  || 252 || [[Nekogal 1 (DM1)|Nekogal #1]]
|-
| 100 || 018 || [[L Leg of Forbidden (DM1)|L Leg of Forbidden]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Joey Wheeler (Duel Monsters 1)|Joey Wheeler]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 333 || [[Sogen (DM1)|Sogen]]
|-
| 20  || 301 || [[Legendary Sword (DM1)|Legendary Sword]]
|-
| 30  || 064 || [[Tiger Axe (DM1)|Tiger Axe]]
|-
| 40  || 043 || [[Karbonala Warrior (DM1)|Karbonala Warrior]]
|-
| 50  || 078 || [[Axe Raider (DM1)|Axe Raider]]
|-
| 60  || 014 || [[Battle Steer (DM1)|Battle Steer]]
|-
| 70  || 012 || [[Swamp Battleguard (DM1)|Swamp Battleguard]]
|-
| 80  || 068 || [[Garoozis (DM1)|Garoozis]]
|-
| 90  || 016 || [[Time Wizard (DM1)|Time Wizard]]
|-
| 100 || 082 || [[Red-eyes B. Dragon (DM1)|Red-eyes B. Dragon]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Ryou Bakura (Duel Monsters 1)|Ryou Bakura]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 335 || [[Yami (DM1)|Yami]]
|-
| 20  || 236 || [[Guardian of the La (DM1)|Guardian of the La]]
|-
| 30  || 338 || [[Mooyan Curry (DM1)|Mooyan Curry]]
|-
| 40  || 294 || [[Dragoness the Wick (DM1)|Dragoness the Wick]]
|-
| 50  || 339 || [[Red Medicine (DM1)|Red Medicine]]
|-
| 60  || 259 || [[Ancient Sorcerer (DM1)|Ancient Sorcerer]]
|-
| 70  || 340 || [[Goblin's Secret Re (DM1)|Goblin's Secret Re]]
|-
| 80  || 225 || [[Fiend Sword (DM1)|Fiend Sword]]
|-
| 90  || 341 || [[Soul of the Pure (DM1)|Soul of the Pure]]
|-
| 100 || 342 || [[Dian Keto the Cure (DM1)|Dian Keto the Cure]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Weevil Underwood (Duel Monsters 1)|Weevil Underwood]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 330 || [[Forest (DM1)|Forest]]
|-
| 20  || 050 || [[Basic Insect (DM1)|Basic Insect]]
|-
| 30  || 305 || [[Lazer Cannon Armor (DM1)|Lazer Cannon Armor]]
|-
| 40  || 053 || [[Killer Needle (DM1)|Killer Needle]]
|-
| 50  || 306 || [[Insect Armor with (DM1)|Insect Armor with]]
|-
| 60  || 054 || [[Gokibore (DM1)|Gokibore]]
|-
| 70  || 049 || [[Big Insect (DM1)|Big Insect]]
|-
| 80  || 055 || [[Giant Flea (DM1)|Giant Flea]]
|-
| 90  || 052 || [[Hercules Beetle (DM1)|Hercules Beetle]]
|-
| 100 || 278 || [[Petit Moth (DM1)|Petit Moth]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Mai Valentine (Duel Monsters 1)|Mai Valentine]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 332 || [[Mountain (DM1)|Mountain]]
|-
| 20  || 327 || [[Follow Wind (DM1)|Follow Wind]]
|-
| 30  || 062 || [[Harpie Lady (DM1)|Harpie Lady]]
|-
| 40  || 318 || [[Elegant Egotist (DM1)|Elegant Egotist]]
|-
| 50  || 272 || [[Mavelus (DM1)|Mavelus]]
|-
| 60  || 316 || [[Electro-whip (DM1)|Electro-whip]]
|-
| 70  || 117 || [[Spirit of the Book (DM1)|Spirit of the Book]]
|-
| 80  || 125 || [[Faith Bird (DM1)|Faith Bird]]
|-
| 90  || 317 || [[Cyber Shield (DM1)|Cyber Shield]]
|-
| 100 || 063 || [[Harpie Lady Sister (DM1)|Harpie Lady Sister]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Rex Raptor (Duel Monsters 1)|Rex Raptor]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 331 || [[Wasteland (DM1)|Wasteland]]
|-
| 20  || 326 || [[Raise Body Heat (DM1)|Raise Body Heat]]
|-
| 30  || 080 || [[Uraby (DM1)|Uraby]]
|-
| 40  || 081 || [[Crawling Dragon 2 (DM1)|Crawling Dragon #2]]
|-
| 50  || 011 || [[Sword Arm of Drago (DM1)|Sword Arm of Drago]]
|-
| 60  || 080 || [[Uraby (DM1)|Uraby]]
|-
| 70  || 081 || [[Crawling Dragon 2 (DM1)|Crawling Dragon #2]]
|-
| 80  || 011 || [[Sword Arm of Drago (DM1)|Sword Arm of Drago]]
|-
| 90  || 079 || [[Megazowler (DM1)|Megazowler]]
|-
| 100 || 032 || [[Two-headed King Re (DM1)|Two-headed King Re]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Mako Tsunami (Duel Monsters 1)|Mako Tsunami]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 334 || [[Umi (DM1)|Umi]]
|-
| 20  || 328 || [[Power of Kaishin (DM1)|Power of Kaishin]]
|-
| 30  || 309 || [[Steel Shell (DM1)|Steel Shell]]
|-
| 40  || 070 || [[Fiend Kraken (DM1)|Fiend Kraken]]
|-
| 50  || 071 || [[Jellyfish (DM1)|Jellyfish]]
|-
| 60  || 073 || [[Kairyu-shin (DM1)|Kairyu-shin]]
|-
| 70  || 070 || [[Fiend Kraken (DM1)|Fiend Kraken]]
|-
| 80  || 071 || [[Jellyfish (DM1)|Jellyfish]]
|-
| 90  || 073 || [[Kairyu-shin (DM1)|Kairyu-shin]]
|-
| 100 || 337 || [[Raigeki (DM1)|Raigeki]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Seto Kaiba (Duel Monsters 1)|Seto Kaiba]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 302 || [[Sword of Ruin (DM1)|Sword of Ruin]]
|-
| 20  || 321 || [[Malevolent Nuzzler (DM1)|Malevolent Nuzzler]]
|-
| 30  || 005 || [[Ryu-kishin (DM1)|Ryu-kishin]]
|-
| 40  || 077 || [[Grappler (DM1)|Grappler]]
|-
| 50  || 091 || [[Mystic Horseman (DM1)|Mystic Horseman]]
|-
| 60  || 023 || [[The Wicked Worm B (DM1)|The Wicked Worm B]]
|-
| 70  || 026 || [[Battle Ox (DM1)|Battle Ox]]
|-
| 80  || 033 || [[Judge Man (DM1)|Judge Man]]
|-
| 90  || 090 || [[Gyakutenno Megami (DM1)|Gyakutenno Megami]]
|-
| 100 || 001 || [[B.eye White Dragon (DM1)|B.eye White Dragon]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Mokuba Kaiba (Duel Monsters 1)|Mokuba Kaiba]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 336 || [[Dark Hole (DM1)|Dark Hole]]
|-
| 20  || 313 || [[Horn of Light (DM1)|Horn of Light]]
|-
| 30  || 324 || [[Invigoration (DM1)|Invigoration]]
|-
| 40  || 075 || [[Man-eating Plant (DM1)|Man-eating Plant]]
|-
| 50  || 102 || [[Mask of Darkness (DM1)|Mask of Darkness]]
|-
| 60  || 076 || [[Krokodilus (DM1)|Krokodilus]]
|-
| 70  || 051 || [[Armored Lizard (DM1)|Armored Lizard]]
|-
| 80  || 066 || [[Kojikocy (DM1)|Kojikocy]]
|-
| 90  || 234 || [[Beautiful Headhunt (DM1)|Beautiful Headhunt]]
|-
| 100  || 017 || [[R Leg of Forbidden (DM1)|R Leg of Forbidden]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Puppeteer of Doom (Duel Monsters 1)|Puppeteer of Doom]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 320 || [[Stop Defense (DM1)|Stop Defense]]
|-
| 20  || 119 || [[Trial of Nightmare (DM1)|Trial of Nightmare]]
|-
| 30  || 233 || [[Dark Titan of Terr (DM1)|Dark Titan of Terr]]
|-
| 40  || 163 || [[Lisark (DM1)|Lisark]]
|-
| 50  || 165 || [[The Judgement Hand (DM1)|The Judgement Hand]]
|-
| 60  || 297 || [[Cyber Soldier of D (DM1)|Cyber Soldier of D]]
|-
| 70  || 136 || [[Witty Phantom (DM1)|Witty Phantom]]
|-
| 80  || 275 || [[Terra Bugroth (DM1)|Terra Bugroth]]
|-
| 90  || 286 || [[Gatekeeper (DM1)|Gatekeeper]]
|-
| 100 || 019 || [[R Arm of Forbidden (DM1)|R Arm of Forbidden]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[PaniK (Duel Monsters 1)|PaniK]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 335 || [[Yami (DM1)|Yami]]
|-
| 20  || 303 || [[Dark Energy (DM1)|Dark Energy]]
|-
| 30  || 083 || [[Castle of D. Magic (DM1)|Castle of D. Magic]]
|-
| 40  || 088 || [[Metal Guardian (DM1)|Metal Guardian]]
|-
| 50  || 086 || [[Barox (DM1)|Barox]]
|-
| 60  || 084 || [[Reaper of the Card (DM1)|Reaper of the Card]]
|-
| 70  || 281 || [[Mystic Clown (DM1)|Mystic Clown]]
|-
| 80  || 087 || [[Dark Chimera (DM1)|Dark Chimera]]
|-
| 90  || 127 || [[Ansatsu (DM1)|Ansatsu]]
|-
| 100 || 085 || [[King of Yamimakai (DM1)|King of Yamimakai]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Bandit Keith (Duel Monsters 1)|Bandit Keith]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 325 || [[Machine Conversion (DM1)|Machine Conversion]]
|-
| 20  || 322 || [[Violet Crystal (DM1)|Violet Crystal]]
|-
| 30  || 098 || [[Clown Zombie (DM1)|Clown Zombie]]
|-
| 40  || 036 || [[The Snake Hair (DM1)|The Snake Hair]]
|-
| 50  || 093 || [[Zanki (DM1)|Zanki]]
|-
| 60  || 286 || [[Gatekeeper (DM1)|Gatekeeper]]
|-
| 70  || 094 || [[Crawling Dragon (DM1)|Crawling Dragon]]
|-
| 80  || 124 || [[Ancient Tool (DM1)|Ancient Tool]]
|-
| 90  || 099 || [[Pumpking the King (DM1)|Pumpking the King]]
|-
| 100 || 020 || [[L Arm of Forbidden (DM1)|L Arm of Forbidden]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Simon Muran (Duel Monsters 1)|Simon Muran]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 323 || [[Book of Secret Art (DM1)|Book of Secret Art]]
|-
| 20  || 311 || [[Black Pendant (DM1)|Black Pendant]]
|-
| 30  || 304 || [[Axe of Despair (DM1)|Axe of Despair]]
|-
| 40  || 307 || [[Elf's Light (DM1)|Elf's Light]]
|-
| 50  || 308 || [[Beast Fangs (DM1)|Beast Fangs]]
|-
| 60  || 213 || [[Aqua Madoor (DM1)|Aqua Madoor]]
|-
| 70  || 145 || [[Phantom Thief (DM1)|Phantom Thief]]
|-
| 80  || 106 || [[Spirit of the Wind (DM1)|Spirit of the Wind]]
|-
| 90  || 022 || [[Summoned Skull (DM1)|Summoned Skull]]
|-
| 100 || 042 || [[Faceless Mage (DM1)|Faceless Mage]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Maximillion Pegasus (Duel Monsters 1)|Maximillion Pegasus]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 284 || [[Tao the Chanter (DM1)|Tao the Chanter]]
|-
| 20  || 241 || [[Dark Assailant (DM1)|Dark Assailant]]
|-
| 30  || 040 || [[Dragon Piper (DM1)|Dragon Piper]]
|-
| 40  || 287 || [[Ogre of the Black (DM1)|Ogre of the Black]]
|-
| 50  || 045 || [[Oscillo Hero 2 (DM1)|Oscillo Hero #2]]
|-
| 60  || 329 || [[Dragon Capture Jar (DM1)|Dragon Capture Jar]]
|-
| 70  || 291 || [[Fireyarou (DM1)|Fireyarou]]
|-
| 80  || 149 || [[Lord of the Lamp (DM1)|Lord of the Lamp]]
|-
| 90  || 044 || [[Rogue Doll (DM1)|Rogue Doll]]
|-
| 100 || 315 || [[Dragon Treasure (DM1)|Dragon Treasure]]
|}

{| class="wikitable" style="display: inline-table;"
|-
|+ [[Yami Yugi (Duel Monsters 1)|Yami Yugi]]
|-
! scope="col" | Wins
! scope="col" | #
! scope="col" | Card
|-
| 10  || 006 || [[Feral Imp (DM1)|Feral Imp]]
|-
| 20  || 007 || [[Winged Dragon 1 (DM1)|Winged Dragon #1]]
|-
| 30  || 041 || [[Celtic Guardian (DM1)|Celtic Guardian]]
|-
| 40  || 319 || [[Mystical Moon (DM1)|Mystical Moon]]
|-
| 50  || 010 || [[Blackland Fire Dra (DM1)|Blackland Fire Dra]]
|-
| 60  || 348 || [[Swords of Revealin (DM1)|Swords of Revealin]]
|-
| 70  || 031 || [[Koumori Dragon (DM1)|Koumori Dragon]]
|-
| 80  || 060 || [[Great White (DM1)|Great White]]
|-
| 90  || 345 || [[Final Flame (DM1)|Final Flame]]
|-
| 100 || 021 || [[Exod. of Forbidden (DM1)|Exod. of Forbidden]]
|}

===Communication bonuses===
By battling against a certain number of different opponents, using the [[wikipedia:Game Link Cable|Game Link Cable]], certain cards could be unlocked, as summarized in the below table.

The card #347 "[[Tremendous Fire (DM1)|Tremendous Fire]]" was notoriously powerful in this game, with the ability to instantly inflict 5000 [[Effect damage|damage]]. It is also considered one of the most difficult cards to unlock, requiring to battle 200 different opponents.

Because no official method of erasing a saved game was ever published, players could not easily keep resetting a second copy of the game to face more unique opponents. However, there is a secret method to erase the saved game coded into the game. To achieve this, players can press the following buttons at the title screen: {{nowrap|{{key press|↓}}, {{key press|↑}}, {{key press|B}}, {{key press|↓}}, {{key press|↓}}, {{key press|→}}, {{key press|↑}}, {{key press|↑}}, {{key press|↑}}, {{key press|↑}}, {{key press|B}} + {{key press|↓}}}}. Other non-standard methods of erasing the save file involve directly tampering with the cartridge, which risks damaging it or the console used to play it.

{| class="wikitable"
|-
! scope="col" | #
! scope="col" | Card
! scope="col" | Number of battles
|-
| 289
| [[Change Slime (DM1)|Change Slime]]
| 10
|-
| 015
| [[Flame Swordsman (DM1)|Flame Swordsman]]
| 20
|-
| 026
| [[Battle Ox (DM1)|Battle Ox]]
| 30
|-
| 329
| [[Dragon Capture Jar (DM1)|Dragon Capture Jar]]
| 40
|-
| 004
| [[Baby Dragon (DM1)|Baby Dragon]]
| 50
|-
| 051
| [[Armored Lizard (DM1)|Armored Lizard]]
| 60
|-
| 340
| [[Goblin's Secret Re (DM1)|Goblin's Secret Re]]
| 70
|-
| 316
| [[Electro-whip (DM1)|Electro-whip]]
| 80
|-
| 011
| [[Sword Arm of Drago (DM1)|Sword Arm of Drago]]
| 90
|-
| 349
| [[Spellbinding Circl (DM1)|Spellbinding Circl]]
| 100
|-
| 016
| [[Time Wizard (DM1)|Time Wizard]]
| 110
|-
| 090
| [[Gyakutenno Megami (DM1)|Gyakutenno Megami]]
| 120
|-
| 066
| [[Kojikocy (DM1)|Kojikocy]]
| 130
|-
| 052
| [[Hercules Beetle (DM1)|Hercules Beetle]]
| 140
|-
| 346
| [[Ookazi (DM1)|Ookazi]]
| 150
|-
| 317
| [[Cyber Shield (DM1)|Cyber Shield]]
| 160
|-
| 079
| [[Megazowler (DM1)|Megazowler]]
| 170
|-
| 073
| [[Kairyu-shin (DM1)|Kairyu-shin]]
| 180
|-
| 022
| [[Summoned Skull (DM1)|Summoned Skull]]
| 190
|-
| 347
| [[Tremendous Fire (DM1)|Tremendous Fire]]
| 200
|}

===Trading===
Cards can be traded from other games using the [[wikipedia:Game Link Cable|Game Link Cable]].

''Yu-Gi-Oh! Duel Monsters'' can connect with other copies of ''Yu-Gi-Oh! Duel Monsters''. ''[[Yu-Gi-Oh! Duel Monsters II: Dark duel Stories]]'', the Japanese edition of ''[[Yu-Gi-Oh! Dark Duel Stories]]'' (''Yu-Gi-Oh! Duel Monsters III: Tri-Holy God Advent''), and ''[[Yu-Gi-Oh! Duel Monsters 4: Battle of Great Duelist]]'' can connect to copies of ''Yu-Gi-Oh! Duel Monsters''.

===Communication Fusion===
A [[Communication Fusion]] can be performed using the Game Link Cable, while connecting to either a second copy of ''Yu-Gi-Oh! Duel Monsters'' or ''[[Yu-Gi-Oh! Duel Monsters II: Dark duel Stories]]''. This requires the two Fusion Material Monsters, as well as #289 "[[Change Slime (DM1)|Change Slime]]". "Change Slime" has a chance of being included in the [[#Starter Deck|Starter Deck]]. After that it can only be obtained [[Change Slime (DM1)#Drops|with a chance of 1/2048 per Duel]], against certain opponents, or as the first [[#Communication bonuses|communication bonus]], after battling against ten different opponents.

The player gets to keep the card permanently, if they conduct a Fusion using this method.

Because #067 "[[Perfectly Ultimate (DM1)|Perfectly Ultimate]]" requires a total of eight Communication Fusions to obtain, each of which requires a copy of "Change Slime", it is considered to be an extremely difficult card to obtain.

{| class="wikitable"
|-
! scope="col" colspan="2" | Fusion Monster
! scope="col" colspan="2" | Material 1
! scope="col" colspan="2" | Material 2
|-
| 037
| [[Gaia the Dragon Ch (DM1)|Gaia the Dragon Ch]]
| 038
| [[Gaia The Fierce Kn (DM1)|Gaia The Fierce Kn]]
| 039
| [[Curse of Dragon (DM1)|Curse of Dragon]]
|-
| 069
| [[Thousand Dragon (DM1)|Thousand Dragon]]
| 004
| [[Baby Dragon (DM1)|Baby Dragon]]
| 016
| [[Time Wizard (DM1)|Time Wizard]]
|-
| 092
| [[Rabid Horseman (DM1)|Rabid Horseman]]
| 026
| [[Battle Ox (DM1)|Battle Ox]]
| 091
| [[Mystic Horseman (DM1)|Mystic Horseman]]
|-
| rowspan="9" | 056
| rowspan="9" | [[Larvae Moth (DM1)|Larvae Moth]]
| rowspan="9" | 278
| rowspan="9" | [[Petit Moth (DM1)|Petit Moth]]
| 123
| [[Dark Plant (DM1)|Dark Plant]]
|-
| 157
| [[Firegrass (DM1)|Firegrass]]
|-
| 274
| [[Green Phantom King (DM1)|Green Phantom King]]
|-
| 273
| [[Ancient Tree of En (DM1)|Ancient Tree of En]]
|-
| 008
| [[Mushroom Man (DM1)|Mushroom Man]]
|-
| 075
| [[Man-eating Plant (DM1)|Man-eating Plant]]
|-
| 158
| [[Man Eater (DM1)|Man Eater]]
|-
| 238
| [[Yashinoki (DM1)|Yashinoki]]
|-
| 180
| [[Arlownay (DM1)|Arlownay]]
|-
| rowspan="9" | 072
| rowspan="9" | [[Cocoon of Evolutio (DM1)|Cocoon of Evolutio]]
| rowspan="9" | 056
| rowspan="9" | [[Larvae Moth (DM1)|Larvae Moth]]
| 123
| [[Dark Plant (DM1)|Dark Plant]]
|-
| 157
| [[Firegrass (DM1)|Firegrass]]
|-
| 274
| [[Green Phantom King (DM1)|Green Phantom King]]
|-
| 273
| [[Ancient Tree of En (DM1)|Ancient Tree of En]]
|-
| 008
| [[Mushroom Man (DM1)|Mushroom Man]]
|-
| 075
| [[Man-eating Plant (DM1)|Man-eating Plant]]
|-
| 158
| [[Man Eater (DM1)|Man Eater]]
|-
| 238
| [[Yashinoki (DM1)|Yashinoki]]
|-
| 180
| [[Arlownay (DM1)|Arlownay]]
|-
| 057
| [[Great Moth (DM1)|Great Moth]]
| 072
| [[Cocoon of Evolutio (DM1)|Cocoon of Evolutio]]
| 072
| [[Cocoon of Evolutio (DM1)|Cocoon of Evolutio]]
|-
| 067
| [[Perfectly Ultimate (DM1)|Perfectly Ultimate]]
| 057
| [[Great Moth (DM1)|Great Moth]]
| 072
| [[Cocoon of Evolutio (DM1)|Cocoon of Evolutio]]
|-
| 217
| [[B. Skull Dragon (DM1)|B. Skull Dragon]]
| 022
| [[Summoned Skull (DM1)|Summoned Skull]]
| 082
| [[Red-eyes B. Dragon (DM1)|Red-eyes B. Dragon]]
|}

===Ante===
After a communication battle, the winner must take one card from their opponent's trunk.

=== Passwords ===
{{Multiple image
| image1 = DM1 guidebook "Stuffed Animal" password.png
| width1 = 200
| image2 = WSJ 1999 issue 9 cover.png
| width2 = 111

| footer = Left: [[Yu-Gi-Oh! Duel Monsters Perfect Master BOOK|The guidebook]], showing how to enter passwords and giving the password for "[[Stuffed Animal (DM1)|Stuffed Animal]]".<br />Right: Issue of ''[[Weekly Shōnen Jump]]'', mentioning Game Boy passwords, while depicting "[[Fairy's Gift (DM1)|Fairy's Gift]]" and "[[Flying Penguin (DM1)|Flying Penguin]]".
}}
Nine of the fifteen secret cards in ''Yu-Gi-Oh! Duel Monsters'' can be unlocked via [[password]]s. These passwords use [[wikipedia:kana|kana]], rather than numbers or letters. Each password is the name of a staff member who worked on the game, or who worked on the [[Yu-Gi-Oh! (manga)|manga series]] at [[Shueisha]] at the time. This was probably done because ''Duel Monsters'' was released before the first ''OCG'' set, ''[[Vol.1]]''.

To access the password entry, the following button sequence must be entered on the main menu: {{key press|up}}, {{key press|down}}, {{key press|B}}, {{key press|down}}, {{key press|down}}, {{key press|up|B}}, {{key press|B}}. This requires frame-perfect input to succeed; if the game is being played on an emulator, the password entry can also be accessed by changing RAM address $DFDE to <code>0x06</code> and pressing {{key press|B}}.

''[[Yu-Gi-Oh! Duel Monsters Perfect Master BOOK]]'', released December 21, 1998, contains the password for #354 "[[Stuffed Animal (DM1)|Stuffed Animal]]".

The 1999 #9 issue of ''[[Weekly Shōnen Jump]]'', released January 25, 1999, contains the passwords for #361 "[[Flying Penguin (DM1)|Flying Penguin]]" and #363 "[[Fairy's Gift (DM1)|Fairy's Gift]]".

{| class="wikitable card-list"
|-
! scope="col" | #
! scope="col" | Card
! scope="col" | Password
! scope="col" | ''Rōmaji''
! scope="col" | Notes
|-
| 351
| [[Yaranzo (DM1)|Yaranzo]]
| ヘイシヨシヒサ
| ''heishiyoshihisa''
| Heishi Yoshihisa was a long-time editor for ''[[Weekly Shōnen Jump]]''.
|-
| 352
| [[Kanan the Swordmis (DM1)|Kanan the Swordmis]]
| ハシモトカナコ
| ''hashimotokanako''
| Kanako Hashimoto was the director of graphics for ''Duel Monsters''.
|-
| 353
| [[Takriminos (DM1)|Takriminos]]
| チダタクリ
| ''chidatakuri''
| Takuri Chida was a programmer for ''Duel Monsters''.
|-
| 354
| [[Stuffed Animal (DM1)|Stuffed Animal]]
| キタウエカズミ
| ''kitauekazumi''
| Kazumi Kitaue was the executive producer for ''Duel Monsters''.
|-
| 355
| [[Megasonic Eye (DM1)|Megasonic Eye]]
| シモムラサトシ
| ''shimomurasatoshi''
| Satoshi Shimomura was the producer for ''Duel Monsters''.
|-
| 358
| [[Seiyaryu (DM1)|Seiyaryu]]
| トリシマカズヒコ
| ''torishimakazuhiko''
| Kazuhiko Torishima was the editor-in-chief for ''Weekly Shōnen Jump''.
|-
| 359
| [[Three-legged Zombi (DM1)|Three-legged Zombi]]
| タカハシトシマサ
| ''takahashitoshimasa''
| Takahashi Toshimasa was an editor for ''Weekly Shōnen Jump''.
|-
| 361
| [[Flying Penguin (DM1)|Flying Penguin]]
| ヤマダノブヒロ
| ''yamadanobuhiro''
| Yamada Nobuhiro was the director of game design for ''Duel Monsters''.
|-
| 363
| [[Fairy's Gift (DM1)|Fairy's Gift]]
| タカハシカズキ
| ''takahashikazuki''
| [[Kazuki Takahashi]] is the creator of ''[[Yu-Gi-Oh!]]'', and was credited with original monster design in ''Duel Monsters''.
|}

===Prizes===
{{Main|''Yu-Gi-Oh! Duel Monsters'' National Tournament prize cards}}
[[File:DM1 tournament prize cards.png|thumb|right|300px|The prize cards]]
Eight of the fifteen secret cards were awarded at the ''Yu-Gi-Oh! Duel Monsters'' national tournament in February 1999. Physical copies of the top four cards were also awarded.

While two of the qualifying cards can also be unlocked with a [[#Passwords|password]], and the four qualifying cards can be obtained by [[#Trading|trading]] from ''[[Yu-Gi-Oh! Duel Monsters II: Dark duel Stories]]'', the top four cards cannot be obtained legitimately by any other means.

{| class="wikitable"
|-
! scope="col" | Position
! scope="col" | #
! scope="col" | Card
! scope="col" | Physical card
|-
| rowspan="4" | Qualifying
| 352 || [[Kanan the Swordmis (DM1)|Kanan the Swordmis]]
| rowspan="4" | 
|-
| 362 || [[Millennium Shield (DM1)|Millennium Shield]]
|-
| 355 || [[Megasonic Eye (DM1)|Megasonic Eye]]
|-
| 357 || [[Yamadron (DM1)|Yamadron]]
|-
| Top 4
| 365
| [[Fiend's Mirror (DM1)|Fiend's Mirror]]
| [[Fiend's Mirror (Normal)|Fiend's Mirror]]
|-
| Top 3
| 356
| [[Super War-lion (DM1)|Super War-lion]]
| [[Super War-Lion (Normal)|Super War-lion]]
|-
| Top 2
| 360
| [[Zera The Mant (DM1)|Zera The Mant]]
| [[Zera the Mant (Normal)|Zera The Mant]]
|-
| Winner
| 364
| [[Black Luster Soldi (DM1)|Black Luster Soldi]]
| [[Black Luster Soldier (Normal)|Black Luster Soldi]]
|}

==Temporarily obtaining cards==
===Fusion Summon===
{{Main|List of ''Yu-Gi-Oh! Duel Monsters'' Fusions}}

The [[Extra Deck]] does not exist in this game. Instead, [[Fusion Summon]]s are performed during Duels by trying to [[Summon]] a monster from the [[hand]] on top of a monster on the [[field]]. The game features 2,159 fusions, resulting in 52 different monsters; often the same monster can be Summoned using a variety of Fusion Material, though eight of the monsters have only a single possible fusion.

All but one of the fusions in ''Duel Monsters'' use only monsters as material. The exception is #063: "[[Harpie Lady Sister (DM1)|Harpie Lady Sister]]", which is fused by equipping #062: "[[Harpie Lady (DM1)|Harpie Lady]]" with #318: "[[Elegant Egotist (DM1)|Elegant Egotist]]". In the ROM, this fusion is handled as an [[effect]], and is not stored with the monster-only fusions.

While the player does not receive a permanent copy of a monster Summoned by fusion, if a fused monster was not previously encountered, an entry for it is added.

===Evolution===
{{pound}}278 "[[Petit Moth (DM1)|Petit Moth]]" and its stages evolve into other cards after being on the field for one turn, in the order shown below. Permanent copies of the evolutions are not added to the player's trunk, though if the player has not previously encountered one of the evolutions, an entry for it is added, similar to fused monsters.

{{pound}}278 "Petit Moth" → #056 "[[Larvae Moth (DM1)|Larvae Moth]]" → #072 "[[Cocoon of Evolutio (DM1)|Cocoon of Evolutio]]" → #057 "[[Great Moth (DM1)|Great Moth]]" → #067 "[[Perfectly Ultimate (DM1)|Perfectly Ultimate]]"

Only one copy of "Petit Moth" can be acquired per game, by defeating [[Weevil Underwood (Duel Monsters 1)|Weevil Underwood]] one hundred times.<!-- need to find out if it can be traded from other games as well --> Permanent copies of its evolutions can only be acquired by [[#Communication Fusion|Communication Fusion]].

Having only 300 [[ATK]] and 200 [[DEF]], and with AI opponents attacking when they have a stronger monster, it is usually difficult to keep "Petit Moth" on the field for a turn; there are only thirteen monsters in the game with a base ATK of 300 or less. "Petit Moth" can be protected in a few different ways:
* [[Tristan Taylor (Duel Monsters 1)|Tristan Taylor]] does not have any monsters with more than 300 ATK, so will not attack an Attack Position "Petit Moth".<!-- "Skull Servant" and "Dark Plant" can be fused into "Wood Remains", which has 1000 ATK; does Tristan perform fusions when able? if so, this method doesn't always work -->
* "Petit Moth" is strengthened by all [[Field Spell Card]]s in the game. By default, this would only increase its stats to 390 ATK and 260 DEF, which would not be enough to protect it from any additional monsters (the base ATK values featured in the game jump directly from 200 to 300, and from 300 to 400). However, "Petit Moth" is a special case: instead of its stats being increased by 30%, they are increased to 750 ATK and 450 DEF, except for when #330: "[[Forest (DM1)|Forest]]" is active, which instead increases its stats to 975 ATK and 585 DEF. These boosts are enough to protect it against dozens of additional monsters (over a hundred in the case of "Forest").
* #348 "[[Swords of Revealin (DM1)|Swords of Revealin]]" prevents the opponent from attacking for three turns.

The game's code allows [[Petit Moth (DM1)#Uses|certain Equip Cards]] to be used on "Petit Moth". However, since only a single card can be played per turn, and because "Petit Moth" evolves at the beginning of its controller's turn after being Summoned, it is not actually possible to equip any cards to "Petit Moth" before it evolves.

==Rules==
This game predates the ''[[Yu-Gi-Oh! Official Card Game]]'' and contains its own rules for ''[[Duel Monsters]]'', most of which are based on the manga rules.

===Deck construction===
* A player's [[Main Deck|Deck]] must contain exactly 40 cards.
* A Deck can have up to 40 copies of the same card.

===Duels===
'''Setup'''
* Each player starts with 8000 [[LP]] and five cards in their hand.
* In campaign, the human player always goes first.

'''Playing cards'''
* Except for the first turn, the player draws one card at the beginning of their turn.
* A player may play one card per turn.
* A player can Summon a [[Monster Card|monster]] into one of the five available zones or activate a [[Spell Card|Magic Card]].
* If a player attempts to Summon a monster into a zone occupied by another monster, the game will attempt to [[#Fusion Summon|fuse]] the monsters. If the Fusion is valid, a new monster will be Summoned into the zone. If the Fusion is invalid, the second monster will replace the first.

'''Modifying ATK/DEF'''
* Certain Magic Cards will modify the [[ATK]] and [[DEF]] of a chosen monster by boosting or reducing it by a number of stages. A monster has its ATK and DEF increased by 60% for each stage. A monster cannot be boosted by more than two stages.
* [[Field Spell Card|Field Magic Cards]] can affect any monsters on the field, specific to the effect of the card. It may either increase the ATK and DEF by 30%, decrease them by 30%, or have no effect. There can only be one Field Card active at a time. This increase/decrease does not count towards the number of stages.

'''Battling'''
[[File:Yu-Gi-Oh! Duel Monsters (J) -S- 2.png|thumb|Battle screen showing #048 "[[Sangan (DM1)|Sangan]]" attacking #167 "[[Ancient Jar (DM1)|Ancient Jar]]"]]
* Each turn, the player must decide if each of their monsters is going to attack or defend.
** If "attack" is selected, the monster is put in [[Attack Position]] and must attack a monster on the opponent's side of the field. If there are none, it will attack the opponent directly. A monster cannot be left in Attack Position at the end of a turn, without declaring an attack, unless it is the first turn or another card is preventing it from attacking.
*** When a monster attacks a player directly, the monster's [[ATK]] is deducted from the LP of the attacked player.
*** When a monster attacks an Attack Position monster, the monster with lower ATK is [[destroy]]ed and the difference is deducted from the LP of the controller of the destroyed monster. If both monsters have the same ATK, they are both destroyed.
*** When a monster attacks a Defense Position monster: If the attacking monster's ATK is higher than the defending monster's [[DEF]], the defending monster is destroyed. If the attacking monster's ATK is equal to or lower than the DEF of the defending monster, the difference is deducted from the LP of the controller of the attacking monster, and neither monster is destroyed.
** If "defend" is selected, the monster is put in [[Defense Position]].
* The turn ends after the player has chosen an action for all of their monsters.

'''Winning'''
* When a player's [[LP]] are reduced to 0, the other player is the winner.
* If a player's hand is empty, the Duelist with the higher LP wins
* If a player has all five "[[Exodia]]" pieces in their hand, they win.

== Promotional cards ==
{{Main|''Yu-Gi-Oh! Duel Monsters'' promotional cards}}
Each copy of ''Yu-Gi-Oh! Duel Monsters'' came with three cards randomly selected from the following set of ten cards:<ref name="konami dm1 page" />
* "[[B. Skull Dragon (DM)|B. Skull Dragon]]"
* "[[Castle of Dark Illusions (DM)|Castle of Dark Illusions]]"
* "[[Dark Magician (DM)|Dark Magician]]"
* "[[Hitotsu-Me Giant (DM)|Hitotsu-Me Giant]]"
* "[[Mirror Force (DM)|Mirror Force]]"
* "[[Monster Reborn (DM)|Monster Reborn]]"
* "[[Red-Eyes B. Dragon (DM)|Red-Eyes B. Dragon]]"
* "[[Ryu-Kishin (DM)|Ryu-Kishin]]"
* "[[Summoned Skull (DM)|Summoned Skull]]"
* "[[Swords of Revealing Light (DM)|Swords of Revealing Light]]"
The cards in this promotional set were from [[Konami's Yu-Gi-Oh! Duel Monsters|Konami's ''Yu-Gi-Oh! Duel Monsters'']], a set of 21 cards that also included the [[Yu-Gi-Oh! Monster Capsule: Breed and Battle promotional cards|''Yu-Gi-Oh! Monster Capsule: Breed and Battle'' promotional cards]] and the [[Yu-Gi-Oh! Duel Monsters meeting experience card|''Yu-Gi-Oh! Duel Monsters'' meeting experience card]]. All of these cards were printed as [[Holofoil Rare]]s and are [[Illegal]] because they predate the ''[[OCG]]'' and use a completely different [[card layout|card design]].

== Game guides ==
{{Main|''Yu-Gi-Oh! Duel Monsters Perfect Master BOOK''|''Yu-Gi-Oh! Duel Monsters Perfect Master BOOK Volume 2''}}
Two game guides for ''Yu-Gi-Oh! Duel Monsters'' were published in Japan by [[Shueisha]]: ''[[Yu-Gi-Oh! Duel Monsters Perfect Master BOOK]]'', published on December 21, [[1998]],<ref>{{cite book |author= |title=遊・戯・王　デュエルモンスターズパーフェクトマスターＢＯＯＫ |trans-title=Yu-Gi-Oh Duel Monsters Perfect Master BOOK  |date=December 21, 1998 |publisher=[[Shueisha]] |location= |language=Japanese |isbn=4-08-779009-6 |page=Back cover |nopp=y}}</ref><ref>{{cite web | url = http://www.amazon.co.jp/dp/4087790096 | title = 遊☆戯☆王デュエルモンスターズパーフェクトマスターBOOK (上巻) (Vジャンプブックス―ゲームシリーズ) [単行本&#93; | trans-title = Yu-Gi-Oh! Duel Monsters Perfect Master BOOK (Volume 1) (V Jump Books - Game Series) [Paperback&#93; | language = Japanese | publisher = Amazon.co.jp | accessdate = June 27, 2013 }}</ref> and ''[[Yu-Gi-Oh! Duel Monsters Perfect Master BOOK Volume 2]]'', published in January [[1999]].<ref>{{cite web | url = http://www.amazon.co.jp/dp/4087790126 | title = 遊☆戯☆王デュエルモンスターズパーフェクトマスターBOOK (下巻) (Vジャンプブックス―ゲームシリーズ) [単行本&#93; | trans-title = Yu-Gi-Oh! Duel Monsters Perfect Master BOOK (Volume 2) (V Jump Books - Game Series) [Paperback&#93; | language = Japanese | publisher = Amazon.co.jp | accessdate = June 27, 2013 }}</ref> Neither guide included any bundled promotional cards.

==Manga scenes used==
The following scenes from the manga were used to create graphics for this game.

<div style="display: flex; flex-wrap: wrap;">
{{Multiple image
| align  = left
| image1 = DM ST1.png
| width1 = 160
| image2 = Ship - Duel 64.png
| width2 = 69
| footer = Stage 1: Ship ([[Yu-Gi-Oh! - Duel 064|Duel 64]])
}}

{{Multiple image
| align  = left
| image1 = Hiroto Honda-G1.png
| width1 = 160
| image2 = Common room - Duel 64.png
| width2 = 352
| footer = Stage 1 opponents' backdrop: Common room ([[Yu-Gi-Oh! - Duel 064|Duel 64]])
}}

{{Multiple image
| align  = left
| image1 = Yugi Muto-G1.png
| width1 = 160
| image2 = Yugi - Duel 80 - impressed.png
| width2 = 166
| footer = [[Yugi Muto (Duel Monsters 1)|Yugi Muto]] ([[Yu-Gi-Oh! - Duel 080|Duel 80]])
}}

{{Multiple image
| align  = left
| image1 = DM jonouchi.png
| width1 = 160
| image2 = Jonouchi - Duel 79 - wins Red-Eyes.png
| width2 = 201
| footer = [[Joey Wheeler (Duel Monsters 1)|Joey Wheeler]] ([[Yu-Gi-Oh! - Duel 079|Duel 79]])
}}

{{Multiple image
| align  = left
| image1 = DM ST2.png
| width1 = 160
| image2 = Duelist Kingdom island - manga.png
| width2 = 285
| footer = Stage 2: [[Duelist Kingdom (island)|Duelist Kingdom]] ([[Yu-Gi-Oh! - Duel 065|Duel 65]])
}}

{{Multiple image
| align  = left
| image1 = Weevil Underwood-DM1.png
| width1 = 160
| image2 = Haga - Duel 65 - smirk.png
| width2 = 134
| footer = [[Weevil Underwood (Duel Monsters 1)|Weevil Underwood]] ([[Yu-Gi-Oh! - Duel 065|Duel 65]])
}}

{{Multiple image
| align  = left
| image1 = Mai Valentine-DM1.png
| width1 = 160
| image2 = Mai - Duel 77 - laughing.png
| width2 = 88
| footer = [[Mai Valentine (Duel Monsters 1)|Mai Valentine]] ([[Yu-Gi-Oh! - Duel 077|Duel 77]])
}}

{{Multiple image
| align  = left
| image1 = Rex Raptor-DM1.png
| width1 = 160
| image2 = Ryuzaki - Duel 79 - I won.png
| width2 = 174
| footer = [[Rex Raptor (Duel Monsters 1)|Rex Raptor]] ([[Yu-Gi-Oh! - Duel 079|Duel 79]])
}}

{{Multiple image
| align  = left
| image1 = Mako Tsunami-DM1.png
| width1 = 160
| image2 = Ryota - Duel 71 - pointing.png
| width2 = 56
| footer = [[Mako Tsunami (Duel Monsters 1)|Mako Tsunami]] ([[Yu-Gi-Oh! - Duel 071|Duel 71]])
}}

{{Multiple image
| align  = left
| image1 = Mokuba Kaiba-DM1.png
| width1 = 160
| image2 = Mokuba - Duel 74 - I trust.png
| width2 = 259
| footer = [[Mokuba Kaiba (Duel Monsters 1)|Mokuba Kaiba]] ([[Yu-Gi-Oh! - Duel 074|Duel 74]])
}}

{{Multiple image
| align  = left
| image1 = Puppeteer-DM1.png
| width1 = 160
| image2 = Ventriloquist - Duel 74.png
| width2 = 193
| footer = [[Puppeteer of Doom (Duel Monsters 1)|Puppeteer of Doom]] ([[Yu-Gi-Oh! - Duel 074|Duel 74]])
}}

{{Multiple image
| align  = left
| image1 = PaniK-DM1.png
| width1 = 160
| image2 = Player Killer of Darkness - Duel 80 - adding Star Chips.png
| width2 = 190
| footer = [[PaniK (Duel Monsters 1)|PaniK]] ([[Yu-Gi-Oh! - Duel 080|Duel 80]])
}}

{{Multiple image
| align  = left
| image1 = Bandit Keith-DM1.png
| width1 = 160
| image2 = Bandit Keith - Duel 92 - Decks in jacket.png
| width2 = 94
| footer = [[Bandit Keith (Duel Monsters 1)|Bandit Keith]] ([[Yu-Gi-Oh! - Duel 092|Duel 92]])
}}
</div>
{{clear}}

== Gallery ==
<gallery>
DM1 box back.jpg | Back of game box.
DM1 SGB.png      | ''Duel Monsters'' as it appears when played on a [[wikipedia:Super Game Boy|Super Game Boy]].
</gallery>

==External links==
* [https://tcrf.net/Yu-Gi-Oh!_Duel_Monsters ''The Cutting Room Floor'' page]
* [http://datacrystal.romhacking.net/wiki/Yu-Gi-Oh!_Duel_Monsters Data Crystal page]

== References ==
<references />

{{Yu-Gi-Oh! Duel Monsters}}
{{Yu-Gi-Oh! Duel Monsters (video game) characters}}
{{Video games}}

[[Category:Yu-Gi-Oh! Duel Monsters (video game)| ]]
[[Category:Yu-Gi-Oh! Duel Monsters (video game series)|Duel Monsters]]
[[Category:Video games|Duel Monsters]]