Suicidal moves during the game of Tetris that purposely cause the falling shapes to get too high for any more rows to disappear. Game ends because pieces reach the top; a "death" is self-inflicted.
Damn it! This game is impossible to win; I have to commit tetricide.
causing yourself to purposely die in the game of Tetris because it is an impossible level, or if you have to go do something and can't continue playing.
Aw, man! my mom needs me to do the dishes! Now I'll have to commit Tetricide!