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[[File:Neos Contact in Teardrop.png|250px|leftright|thumb|The "[[Neos]]" [[Contact Fusion]] monsters.]]Unlike most [[Fusion Monster]]s, which must be [[Fusion Summon]]ed, "[[Neos]]" Fusion Monsters are instead Summoned via [[Contact Fusion]], which requires [[shuffling]] the [[Fusion Material]]s on the [[field]] into the [[Deck]] to [[Special Summon]] them. However, the "Neos" Fusion Monsters also have an effect that returns themselves from the field to the [[Extra Deck]] during the [[End Phase]]. To avoid this, the [[Field Spell Card]] "[[Neo Space]]" allows the Fusion Monsters to stay on the field as long as "Neo Space" does, and the [[Equip Spell]] "[[Instant Neo Space]]" allows the [[equip]]ped Fusion Monster to stay on the field (as well as allowing the Special Summon of "[[Elemental HERO Neos]]" when the equipped monster [[leaves the field]]). "[[G.B. Hunter]]", can also prevent the final effect of the "Neos" Fusion Monsters from applying, but will also stop further Contact Fusions.The "Neo-Spacian" monsters themselves do not have particularly powerful/useful effects, but there are notable exceptions in the modern game, namely "[[Neo-Spacian Aqua Dolphin]]" (which can help the player gain information on the opponent's hand, but also potentially get rid of a combo starter or a problematic [[hand trap]] or baiting out the activations of such effects) and "[[Neo-Spacian Grand Mole]]" (which can bounce troublesome monsters by battling them). A couple of them ("Neo-Spacian Aqua Dolphin" and "[[Neo-Spacian Glow Moss]]") can be [[Card evolutions|upgraded]] with "[[NEX]]" ("[[Neo-Spacian Marine Dolphin]]" and "[[Neo-Spacian Twinkle Moss]]").

Due to the nature The general playstyle of Contact Fusion, the "[[Deck]] must use numerous ways to [[swarmNeos]] the field with "Elemental HERO Neos" and "Neo-Spacian" monsters. "[[Neo Space Connector]]" is essential to this Deck's playstyle as it serves as facilitate the Special Summons of a one-card "Neos" Contact variety of powerful Fusion; it can Summon "Elemental HERO Neos" or a "Neo-Spacian" monster from the [[hand]] or Deck upon its [[Normal Summon]] and then it can [[Tribute]] itself to Summon another material from the [[GY]]. "Neo-Spacian" monsters are also bolstered by many support cards that range from swarming the field with "[[Cocoon Party]]"Monsters, much like "[[Contact]]" or "[[NEXTElemental HERO]]" (and "[[Contact GateHERO]]"as a whole). Rather than Summoning This is commonly done with the [[material]]s onto the field for Contact Fusion, plethora of cards which specifically support "[[Miracle ContactElemental HERO Neos]]" or and "[[Favorite Contact]]Neo-Spacian" can return materials monsters, which culminates into a playstyle that differs from the player's hand, field, or GY to rest of the deck (with "Favorite ContactElemental HERO" can also return banished monsters) to Special Summon "Neos" Fusion Monsters, though this does not count as properly Summoning them, so they cannot be Special Summoned again through other cards or effectsarchetype.

Most of these effects require filling the GY with The "Neo-Spacian" monsters and "Elemental HERO Neos" beforehand. "[[Convert Contact]]" and "[[EN - Engage Neo Space]]" themselves do not have particularly powerful ATK/DEF or useful effects, but there are viable solutions for this, sending two monsters while also gaining two cards. "[[Elemental HERO Prisma]]", which can [[send]] "Elemental HERO Neos" or a "Neo-Spacian" monster to the GY and change its name to notable exceptions in the one of the sent card can be used for the Summon of a "Neos" Fusion. Other options include using cards like "[[Wrath of Neos]]" on itmodern game. These are:

* "[[Neos FusionNeo-Spacian Aqua Dolphin]]" is a key card , which easily Summons a "Neos" Fusion Monster by sending materials from can help the Deck to player gain information on the GY, setting up the GY for either reviving materials for Contact Fusions or "Miracle Contact" in subsequent turns (as the cardopponent's activation prevents the player from Special Summoning for the rest hand, but also potentially get rid of that turn). It can then banish itself from the GY to act as a one-time protection for "Neos" Fusion Monsters from destruction, as well as preventing "Neos" Fusion monsters from being shuffled into the Extra Deck by their own effect if "Neo Space" combo starter or "Instant Neo Space" is not on the field. A strong choice to Summon with "Neos Fusion" is "[[Elemental HERO Brave Neos]]", which requires a problematic [[Levelhand trap]] 4 or lower [[Effect Monster]] and "Elemental HERO Neos", which all bait out the activations of such effects of the latter * "[[Neo-Spacian" monsters are. It also allows other Decks to make use of it as "Neos Fusion" functions similarly to "[[Foolish BurialGrand Mole]]" for Level 4 or lower Effect Monsters to make use of their GY effects. Finally, it also does not have an effect to shuffle which can return troublesome monsters and itself back into the Extra Deck, thereby not needing to waste a copy of "Neos Fusion" from the GY nor requiring "Neo Space" or "Instant Neo Space" to keep it on the fieldhand by battling them. "Neos Fusion" also allows easy access to * "[[Rainbow NeosNeo-Spacian Dark Panther]]" to make use of , which can stituationally copy an opponent's monster name and its field/GY clearing effects and high [[ATK]]/[[DEF]].

Although the effects A couple of "Neo Space Connector" are catered towards the Contact Fusion playstyle as mentioned before, it also generated easy access to the effects of "Neos Fusion" by Special Summoning a them ("Neo-SpacianAqua Dolphin" monster through its effect, then using that Summoned and "[[Neo-SpacianGlow Moss]]" monster and itself to ) can be [[Link SummonCard evolutions|upgraded]] with "[[Predaplant Verte AnacondaNEX]]", which can then activate its effect by sending "Neos Fusion" to the GY to copy its effect.("[[Contact OutNeo-Spacian Marine Dolphin]]" acts similarly to and "[[DeNeo-FusionSpacian Twinkle Moss]]", allowing the user to replace "Neos" Fusion Monsters for its materials in the Deck to save the Fusion Monster from leaving the field or to gain additional attacks).

"[[Elemental HERO Spirit of Neos]]Neo-Spacian" is a key card which can search also supported by the vast majority of "Elemental HERO Neos" support cards (or "[[PolymerizationChrysalis]]") upon its Special Summon while also tagging itself out for any normal archetype, having a "Elemental HEROChrysalis" monster from the deck including for each corresponding "Elemental HERO NeosNeo-Spacian". It monster and can be Special Summoned benefit from the hand by its own effect during the opponent's turn (which allows itself wall out the opponent's attacks) or "[[Cross KeeperCocoon Party]]", from the Deck with "EN - Engage Neo Space" or "[[EN ShuffleContact]]". One of the important cards "Spirit of Neos" can search is and "[[Instant ContactCocoon Rebirth]]", an to use "[[Instant Fusion]]Chrysalis"-like card which can cheat monsters to Summon out a Level 7 or lower "Elemental HERO" or "Neo-Spacian" monster from the Extra Deck, allowing additional extensions both within and outside of the "Elemental HERO"/their corresponding "Neo-Spacian" playstylecounterparts.

As the majority of Unlike most [[Fusion Monster]]s, which must be [[Fusion Summon]]ed, most "Neos" Fusion Monsters list specific materials aside from "Elemental HERO Neos"are instead Summoned via [[Contact Fusion]], this allows "Neo-Spacian"/"Neos" Decks to make use of cards like "which requires [[Keeper of Dragon Magicshuffling]]" (for searching out the required "[[Fusion" Material]]s on the [[Spellfield]]s, Summoning needed materials from into the GY for Contact Fusions while also being a valid material for "Brave Neos") and "[[Fusion DeploymentDeck]]" (which can Summon any needed materials for "Neos" Contact Fusions while also being to [[searchSpecial Summon]]able by them. However, the "Keeper of Dragon MagicNeos"). Decks Fusion Monsters also have a mandatory effect that can pump out multiple "returns themselves from the field to the [[HEROExtra Deck]]" monsters onto during the field, such as the "[[Vision HEROEnd Phase]]" engine of ". To avoid this, the [[Vision HERO FarisField Spell Card|FarisField Spell]]", "[[Vision HERO Increase|IncreaseNeo Space]]", and "the [[Vision HERO VyonEquip Spell Card|VyonEquip Spell]]", can utilize "[[Xtra HERO Infernal DevicerInstant Neo Space]]" makes this effect no longer mandatory to search out activate, allowing the Fusion Monsters to stay on the field as long as either card is present (as well as allowing the Special Summon of "Elemental HERO Neos" and/or "Neo-Spacian" monsterswhen the equipped monster [[leaves the field]]).

The two-material "Neos" Contact Fusion Monsters ("[[Elemental HERO Air Neos|Air Neos]]", "[[Elemental HERO Aqua Neos|Aqua Neos]]", "[[Elemental HERO Dark Neos|Dark Neos]]", "[[Elemental HERO Flare Neos|Flare Neos]]", "[[Elemental HERO Glow Neos|Glow Neos]]", "[[Elemental HERO Grand Neos|Grand Neos]]" and "[[Elemental HERO Marine Neos|Marine Neos]]") have effects based on their respective "Neo-Spacian" material's effect. The three and four-material "Neos" Contact Fusion Monsters ("[[Elemental HERO Chaos Neos|Chaos Neos]]", "[[Elemental HERO Magma Neos|Magma Neos]]", "[[Elemental HERO Nebula Neos|Nebula Neos]]", "[[Elemental HERO Storm Neos|Storm Neos]]" and "[[Elemental HERO Cosmo Neos|Cosmo Neos]]") generally have more powerful effects, and while they still have their mandatory effects of shuffling themselves back into the Extra Deck, these shared effects can also clear both players' fields (or only the opponent's field in the case of "Cosmo Neos") to varying extents, making these effects situationally beneficial.  Due to the nature of Contact Fusion, the [[Deck]] must use numerous ways to [[swarm]] the field with "Elemental HERO Neos" and "Neo-Spacian" monsters. "[[Neo Space Connector]]" is essential to this Deck's playstyle as it serves as a one-card "Neos" Contact Fusion; it can Summon "Elemental HERO Neos" or a "Neo-Spacian" monster from the [[hand]] or Deck upon its [[Normal Summon]] and then it can [[Tribute]] itself to Summon another material from the [[GY]]. "Elemental HERO Neos" and "Neo-Spacian" monsters are also bolstered by many support cards that such as "[[NEXT]]", "[[Contact Gate]]", "[[EN Shuffle]]", "[[Cross Keeper]]", "[[EN - Engage Neo Space]]" and "[[EN Wave]]".  Rather than Summoning the [[material]]s onto the field for Contact Fusion, "[[Miracle Contact]]" can return materials from the player's hand, field, or GY to the deck to Special Summon "Elemental HERO" Fusion Monsters that mention "Elemental HERO Neos" as material (though it does not properly Summon the monster). As a [[Normal Trap Card|Normal Trap]], "[[Favorite Contact]]" can also be used to Special Summon a Fusion Monster that mentions a "HERO" monster as a material by returning monsters to the Deck from almost every other location similarly to "Miracle Contact" (including the user's [[banish]]ment), though it prevents that Fusion Monster from being returned to the Extra Deck if "Elemental HERO Neos" was returned, making it useful for Summoning the "Neos" Contact Fusion without worrying about its mandatory effect of shuffling itself to the Extra Deck. Some of the Summonable monsters can also disrupt the opponent if Summoned via "Favorite Contact" during their turn. In particular "Cosmo Neos" can lock out the opponent from using a majority of their cards on the turn that it was Summoned from the Extra Deck.  Most of these effects require filling the GY with "Neo-Spacian" monsters and "Elemental HERO Neos" beforehand. "[[Convert Contact]]" and "EN - Engage Neo Space" are viable solutions for this, sending two monsters while also gaining two cards (draw 2 cards from the former, while the latter Special Summons a Level 5 or higher "Elemental HERO" monster and adds 1 "[[Polymerization]]" from the Deck or GY). "[[Elemental HERO Prisma]]", which can [[send]] "Elemental HERO Neos" or a "Neo-Spacian" monster to the GY and change its name to the one of the sent card can be used for the Summon of a "Neos" Fusion. "[[Elemental HERO Spirit of Neos]]" is a key card which can search the vast majority of "Elemental HERO Neos" support cards or "[[Polymerization]]" upon its Special Summon while also tagging itself out for any normal "Elemental HERO" monster from the deck including "Elemental HERO Neos". It can be Special Summoned from the hand by its own effect during the opponent's turn to wall out the opponent's attacks, or "[[Cross Keeper]]", from the Deck with "EN - Engage Neo Space" or "[[EN Shuffle]]". One of the important cards "Spirit of Neos" can search is "[[Instant Contact]]", an "[[Instant Fusion]]"-like card which can cheat out a Level 7 or lower "Elemental HERO" or "Neo-Spacian" monster from the Extra Deck which can easily Summon: the two-material "Neos" Contact Fusions, "[[Neo-Spacian Marine Dolphin]]" (as an easier way to Summon "[[Elemental HERO Marine Neos]]") and other important "Elemental HERO" Fusion Monsters such as "[[Elemental HERO Sunrise]]". Above all else, it functions as a useful extender both within and outside of the "Neos"/"Neo-Spacian" playstyle. Over time, later support for the "Neo-Spacian"/"Neos" playstyle started to focus more on the traditional Fusion Summon playstyle that the other "Elemental HERO" monsters (and "HERO") are notable for, integrating the two themes' playstyles together more easily. As such, the remaining "Neos" Fusion Monsters are required to be Fusion Summoned instead of Contact Fusion:  * "[[Elemental HERO Divine Neos]]" is difficult to Summon due to its Fusion Material requirements, though it can banish a "Neos", "Neo-Spacian" or "HERO" monster to permanently gain ATK and temporarily copy the banished monster's effect.* "[[Elemental HERO Neos Knight]]" is a formiddable beatstick that can attack twice although it cannot deal battle damage.* "[[Elemental HERO Brave Neos]]" is a very flexible "Neos" Fusion Monster with a variety of useful effects whilst being easy to Summon, only requiring a [[Level]] 4 or lower [[Effect Monster]] and "Elemental HERO Neos". Also, it also does not have an effect to shuffle itself back into the Extra Deck, thereby not requiring "Neo Space" or "Instant Neo Space" to keep it on the field. Furthermore, if "Brave Neos" destroys a monster by battle, it can search for an "Elemental HERO Neos" support card. * "[[Elemental HERO Shining Neos Wingman]]" can destroy the opponent's cards on the field upon Summon whilst having destruction protection effects. One of its commonly used materials, "[[Elemental HERO Flame Wingman - Infernal Rage]]", can search "Favorite Contact" which can Special Summon "Shining Neos Wingman" during the opponent's turn to disrupt their plays. * "[[Elemental HERO Neos Kluger]]" can float into "[[Neos Wiseman]]" upon destruction, which can be used for strategic OTKs.* "[[Rainbow Neos]]" boasts a 4500 ATK beatstick which can clear the opponent's field or GY. * "[[Armed Neos]]" can destroy multiple monsters upon its Summon, then Tribute itself to cheat out an "Elemental HERO" Fusion Monster during the opponent's turn if it destroyed an opponent's monster by battle on the previous turn. "[[Neos Fusion]]" is an important card which easily Summons a Fusion Monster that requires two materials including "Elemental HERO Neos" by sending those materials from the field, hand or Deck to the GY (even [[Ignoring the Summoning conditions|ignoring its Summoning conditions]]). This sets up the GY for either reviving materials for Contact Fusions, "Miracle Contact" or "Favorite Contact" in subsequent turns (as the card's activation prevents the player from Special Summoning for the rest of that turn). It can then banish itself from the GY to act as a one-time protection for "Neos" Fusion Monsters from destruction, as well as preventing "Neos" Fusion monsters from being shuffled into the Extra Deck by their own effect if "Neo Space" or "Instant Neo Space" is not on the field. This cards greatly supports easier access to the two-material "Neos" Contact Fusion Monsters, as well as most of the aformenetioned "Neos" Fusion Monsters that must be Fusion Summoned, and protecting said monsters. Other Decks can make use of "Neos Fusion" to Summon "Brave Neos" similarly to a "[[Foolish Burial]]" for Level 4 or lower Effect Monsters to make use of their GY effects later. ===Other additions===To alleviate the need of specific materials that "Neos" Fusion Monsters requires, the Deck can make use of "[[Keeper of Dragon Magic]]" (for searching out the required "Fusion" [[Spell Cards|Spells]], Summoning needed materials from the GY for Contact Fusions while also being a valid material for "Brave Neos") and "[[Fusion Deployment]]" (which can Summon any needed materials for "Neos" Contact Fusions while also being [[search]]able by "Keeper of Dragon Magic"). Decks that can pump out multiple "HERO" monsters onto the field, such as the "[[Vision HERO]]" engine of "[[Vision HERO Faris|Faris]]", "[[Vision HERO Increase|Increase]]", and "[[Vision HERO Vyon|Vyon]]", can utilize "[[Xtra HERO Infernal Devicer]]" to search out "Elemental HERO Neos" and/or "Neo-Spacian" monsters to have them in hand or in the GY (ie. after using them for a Fusion Summon of a monster such as "Brave Neos") in preparation for "Miracle Contact" or "Favorite Contact". However, the player should note that a few cards that support the "Neo-Spacian"/"Neos" playstyle ("EN - Engage Neo Space", "Fusion Duplication", "Keeper of Dragon Magic" etc.) prevents the player from Special Summoning non-Fusion Monsters from the Extra Deck (cutting off access to the [[Link Monster]] plays such as the aformentioned "Infernal Devicer"). Likewise, the effect of "Infernal Devicer" prevents the player from Special Summoning non-"HERO" monsters for the turn (thus preventing the Contact Fusion playstyle), so the player will have to choose one group of strategies and decide their plays accordingly. As all main deck Main Deck "Neo-Spacian" monsters are Level 3 and have completely different ATK, /DEFvalues, Types and Attributes, while only "[[Neo-Spacian Dark Panther]]" and "[[Neo-Spacian Flare Scarab]]" have the same DEF, any Deck playing a heavy amount of "Neo-Spacian" monsters is capable of using "[[Small World]]" to search any of their key monsters, such as "Neo Space Connector" or "Keeper of Dragon Magic".

* [[Isolde, Two Tales of the Noble Knights]](Traditional Format)