One of the most recognizable and popular video games of all time is Tetris. Who can forget the jovial tune playing in the background as you lower blocks onto the screen. In order to make space for all the other blocks that are still on the way down, everyone is continuously trying to fill a horizontal line. Here, you can play it for free online! Tetris made an indelible impression on the collective memory of the genre in the 1990s thanks to the Game Boy, which introduced it to millions of impressionable children.