When did the old card monster come out?

The old card monster was released on 1996. Card monster (game king! The early version was first introduced by Japanese game company Konami in 1996. In this version, the card monster is part of a card exchange game. Subsequently, from 1999 to 2000, Konami launched more popular animation and comic series, which made Card Monster widely recognized and popular all over the world. So we can say that the old version of the card monster came out as early as 1996, but its popularity and influence mainly come from the animation and comic series of the game king after 1999.