Tetris

Tetris is a video game.

History
Clancy Wiggum's cousin, Mark, was described as a "fat kid who went to Penn State and liked to play Tetris."

A real life Tetris game could be played on the Royalty Valhalla cruise ship.

Non-canon
Dr. Hibbert was playing Tetris on his phone whilst Marge was giving birth.

Behind the Laughter
 is a real video game created by.