Created by Alexey Pajitnov in 1984. The Game Boy version was released in 1989 from Nintendo R&D1. Received for 6th birthday along with Super Mario Land. This stuck with me a long time - I played Tetris regularly for years, all the way through Jr. High, until I had actually maxed out the game's speed/level count and continued into infinite play. At that point my interest dropped off, but I can say this game has given me as much entertainment as any game ever. I've also lost count of the different versions of this that I've played, and I've even reimplemented it.