Duel Monsters are a series of gamboy\gamboy color and gamboy advance video games, the international versions of theses video games has changed thier names so they didn't look as a series. thoses games come with promo cards which are listed below, it should be noted that the Series 1 promo cards aren't legal because they didn't look like actual OCG cards, they also came before the OCG.

• Game Boy Duel Monsters Promos: Series 1
• GameBoy Duel Monsters Promos: Series 2
• GameBoy Duel Monsters Promos: Series 3
• GameBoy Duel Monsters Promos: Series 4
• GameBoy Duel Monsters Promos: Series 5
• GameBoy Duel Monsters Promos: Series 6
• GameBoy Duel Monsters Promos: Series 7
• GameBoy Duel Monsters Promos: Series 8