Chee-Chai Alien is a video game developed by Creatures, Inc. and released on the Game Boy Color in Japan on February 27, 2001. It was designed and developed by Hirokazu Tanaka.

Creatures Inc. is a Japanese video game company affiliated with Game Freak and Nintendo and is one of the owners of the Pokémon franchise. It was founded by Tsunekazu Ishihara in November 1995, with t