Pokémon and  Pokémon Tetris are a series of video games developed by whom?
Pokémon Tetris: Pokémon Tetris (Japanese: ポケモンショックテトリス , "Pokémon Shock Tetris") was a Pokémon-themed adaptation of Tetris for the Pokémon Mini handheld games console published by Nintendo in 2002. Pokémon (video game series): Pokémon is a series of video games developed by Game Freak and Creatures Inc. and published by Nintendo as part of the "Pokémon" media franchise.
Game Freak and Creatures Inc.