Originally created by computer engineer Alexey Pajitnov, Despite its vast recognition, Tetris’ royalties were claimed by the Kremlin until Pajitnov moved to the US and regained its rights in 1996. Today, over 70 million copies of the game have been sold on nearly every platform imaginable and countless freeware versions are available online. Here’s to 25 years of shape-shifting blocks and humming the Korobeiniki.