Originally developed on a Russian DCC clone PDP Computer by a humble employee of the Moscow Academy of Sciences, Alexey Pajitnov's mega hit succeeds where other puzzle games have failed: by keeping it simple. Seven blocks, known as Tetraminoes, and one empty "well" quickly translate into hopeless addiction. There are few games that haunt you even after you stop playing -- but 30 minutes with this puzzle masterpiece and you'll see Tetris pieces wherever you look. No matter what platform it's on, Tetris remains one of the purest and accessible videogames ever made, proving that some of the most addictive games are the simplest