Which Japanese video-game developer created Pokémon Red and Green?

Game Freak created Pokémon Red and Green, the first Pokémon video games.

Game Freak began as a video-game magazine founded by Satoshi Tajiri and later became a development company. Tajiri proposed the Pokémon concept, and Game Freak worked with Nintendo and Creatures to turn it into a commercial game series.

Pokémon Red and Green were released in Japan in 1996. Game Freak handled development, while Nintendo published the games and helped distribute the resulting franchise. Creatures, another important partner, contributed to the broader Pokémon business and later developed parts of the trading-card and game ecosystem.

The name Game Freak can be confused with Nintendo because Nintendo is the best-known publisher associated with Pokémon. However, development and publishing were separate roles: Game Freak made the original games, while Nintendo published them.