Tetrisphere (Europe) (Japanese title: テトリスフィア) is a puzzle game released for the Nintendo 64 in 1997. Developed by H2O Entertainment and published by Nintendo, the game is based on the classic Tetris formula. In Tetrisphere, the player is presented with a three-dimensional sphere composed of various shaped blocks. The player must rotate the sphere and rearrange the blocks in order to make them fit together and clear the sphere. The game features a variety of game modes, including Challenge Mode, which tasks the player with clearing the sphere in the shortest amount of time possible, and Puzzle Mode, which presents the player with a set of pre-made puzzles. Tetrisphere also features a two-player mode, allowing players to compete against each other in a race to clear the sphere. The game features a unique soundtrack and visuals that make it stand out from other Tetris games. Tetrisphere is an innovative and challenging puzzle game that is sure to provide hours of entertainment for puzzle fans.