Twin Squash (ツインスカッシュ) is an action game by Sega released exclusively on System C2 hardware in 1991.
The game is a competitive Breakout clone. Clearing four or more blocks will cause your blocks to rise and the competitor's to fall depending on how many blocks were cleared (look at a meter on the top of the screen). If blocks fall to the bottom of a player's side, that player loses. Losing the ball will only cause your blocks to go lower, as there is only one "life."