- Stargate is a sequel to the space shooter game Defender, and an adaptation of the arcade game from Williams Electronics. It was later renamed as Defender II.
- This game was also released by AtariSoft in 1983 for the PC and the Apple II. It is not affiliated with the 1994 Stargate film or the modern-day franchise.
- On the Atari 2600 the game is played with two controllers.