Space Invaders
Space Invaders is the 1980 Atari 2600 version of Taito’s 1978 arcade game, designed by Tomohiro Nishikado. The home port was programmed by Rick Maurer and was the first arcade game officially licensed for a home console. You slide a laser cannon along the ground and shoot down rows of marching aliens before they reach the bottom. Its many variations let you tune it from relaxed to very hard. You can play it here in your browser, with nothing to install.