Kaijin Zona (2000)

A Nintendo published adventure game released exclusively on the Game Boy Color in Japan, based on the television character of the same name. The player is invited to a school where solving puzzles is the most popular pastime. Upon arriving however, the player will meet Phantom Zona, who reveals that the school is actually a secret base for a gang that fights each other using riddles.

• Release Date: October 21, 2000
• Developer: Nintendo