Third in the Defender, Stargate series. In this, the last incaration, you are saving the humans yet again. You have to watch out for various bad guys trying to kill you and "the family." As with most Williams games of this era, the game is extremely fast-paced, and intense.
The game features two 8-way joysticks: one for moving your character, and one for firing. It takes a bit of practice, but eventually a player can get the hang of moving in one direction and firing in a completely different direction.
Coin-Op Technical Details