"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...

"Tetris is perhaps the most instantly recognizable, popular video game ever made. Sales of authorized copies total near $1 billion to date, and that is just a fraction of the money made from knockoffs and pirated versions. Based on an obscure board game, it was designed for early computers, became a hit on TV consoles, and soared in popularity with handheld devices like the Game Boy. Today it lives on in smartphones, tablets, and laptops. All this...