If you grew up in the '80s or '90s, you can probably still see the iconic Tetris blocks falling when you close your eyes.Abandonware DosThe classic puzzle game of matching blocks and disappearing lines has a long and strange history that stretches throughout the final years of the Cold War. Tetris was originally created by Alexey Pajitnov, an artificial intelligence researcher at Moscow's Soviet Academy of Sciences.Pajitnov and his son.Pajitnov was working at the Academy's Computer Center in 1984, and would test the new hardware's strength by designing simple games. His creations were shared between departments, and