Beams, boxes, zig-zags and L-shaped blocks drop down a narrow passage. Feel your pulse quicken as you spin shift and align the shapes for a perfect fit. It's challenging and demands a split second decision! Product Description 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.