The Yu-Gi-Oh! True Duel Monsters: Sealed Memories promotional cards (遊戯王真デュエルモンスターズ 封印されし記憶同梱カード Yūgiō Shin Dyueru Monsutāzu Fūinsareshi Kioku Dōkon Kādo) are a set of five cards included with the video game Yu-Gi-Oh! True Duel Monsters: Sealed Memories, released on December 9, 1999. Each copy of the game with a random selection of three of the five cards.