Yu-Gi-Oh! Duel Monsters promotional cards is a set of Konami's Yu-Gi-Oh! Duel Monsters promotional cards given away with the Game Boy game Yu-Gi-Oh! Duel Monsters, published in Japan on December 16, 1998. Each copy of the game featured three cards randomly selected from the ten-card set.
These differ from Yu-Gi-Oh! Official Card Game cards due to the fact that they were released before the Official Card Game game was created; this set and the Yu-Gi-Oh! Monster Capsule: Breed and Battle promotional cards are the only sets to contain such cards.
- ↑ http://www.konami.jp/products/yugioh_dm1_gb/