While the goal is the same as in Tetris, to clear the highest number of rows as possible, the game features many special items and power ups, such as a bomb that clears an area of the playfield or a satellite that shoots blocks for a limited amount of time.
Sega Ages 2500 Series Vol. 28: Tetris Collection
September 28, 2006
This compilation game includes Sega's version of Tetris, plus Flash Point and Bloxeed.
Being an official Tetris release, this makes Bloxeed a semi-official Tetris game.
Sega held no right over Tetris when creating Bloxeed, but they were only inspired by the game, and its copyright status was debated.
Sega however was officially licensed by The Tetris Company to release Sega Ages 2500 Series Vol. 28: Tetris Collection.