"It is, perhaps, the perfect video game. Simple yet addictive, Tetris delivers an irresistible, unending puzzle that has players hooked. Play it long enough and you'll see those brightly colored geometric shapes everywhere. You'll see them in your dreams. Alexey Pajitnov had big ideas about games. In 1984, he created Tetris in his spare time while developing software for the Soviet government. Once Tetris emerged from behind the Iron Curtain, it was...