Stargate
Stargate is Atari’s 2600 version of the 1981 Williams arcade sequel to Defender, created by Eugene Jarvis and Larry DeMar of Vid Kidz. Bill Aspromonte programmed the cartridge and Andrew Fuchs did the graphics and sound. You fly across a scrolling planet, shooting aliens and protecting the humanoids they try to carry away. It is unusual for the 2600 because it uses two joysticks at once: one to fly and one for the special weapons. You can play it here in your browser.