Tetris 2, known in Japan as Tetris Flash, is a puzzle video game developed by Nintendo and Tose and published by Nintendo for the Nintendo Entertainment System. It was ported to the Game Boy in 1993 and Super Nintendo Entertainment System in 1994 by Bullet Proof Software.

As a variation of the Tetris concept, rather than having the objective of matching horizontal lines of blocks that descend from the top of the screen as tetrominos, the player matches the colors of the descending blocks (which include irregular tetromino shapes) to blocks already fixed on the game board, which causes blocks to disappear from the board when three blocks of the same color are matched, in a manner similar to the game Dr. Mario.