Pokemon Stadium (Europe) (Japanese title: ポケモンスタジアム), released in 2000, is a Nintendo 64 game developed by Nintendo and HAL Laboratory that allows players to battle their Pokemon in 3D arenas. Players can use their own Pokemon from the Game Boy games Pokemon Red, Blue, and Yellow, or use the pre-loaded Pokemon provided in the game. Players can also use the Transfer Pak to transfer their Pokemon from the Game Boy games to the Nintendo 64. The game features a variety of battle modes, including single-player tournaments, multi-player battles, and mini-games. Players can also participate in Gym Leader Castle, a series of battles against the Gym Leaders from the Game Boy games. Pokemon Stadium also includes a variety of features such as the ability to view Pokemon in 3D, a library of Pokemon data, and a Pokemon lab that allows players to customize their Pokemon. Pokemon Stadium is the perfect game for both casual and competitive Pokemon players, and is a must-have for any Nintendo 64 owner.