Unlike Tetris, however, each stage features a starting formation with some flashing blocks. The objective is to clear those specific blocks.
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 Flash Point a semi-official Tetris game.
Sega held no right over Tetris when creating Flash Point, 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.