Tetris has been around since the 1980's. It better last this long coz it's an original game that you can brag to the new generations. The Tetris game is a popular use of tetrominoes, the four element special case of polyominoes minus the violence, the weapons, the complicated plot, the characters, et cetera.
And now the almight Internet has caught up. Here's a screenshot of what it looks like, and how it would turn your perfectly good brain upside down.