Conquest of Mars
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A top-down shooter for the Amiga released in 1992 that shares various similarities with Asteroids.
Trisector is an arcade style side scrolling bullet filled shoot-em-up that has a dash of cave flying and a heaping ton of bullets.
Blade Kitten: Dirty Angels is a run-and-gun spinoff of the Blade Kitten video game/comic series.
Space Action is a side-scrolling shoot 'em up for the Commodore 64. It was the first commercial game developed in Sweden, and saw some international success.
In this action game written by Jon Williams the player takes the role of Major Blink, the creator of the Berks, who has now become a painter. All blocks must be painted from all sides by the Major while homing drones must be avoided and bears, who try to repaint the blocks, must be shot.
Space Dash: Earth Defender is a swipe based space shooter available on Android and iOS.
A vertical-scrolling shoot ’em up spinoff of Earth Defense Force 4.1.
A mixture of a bidirectional, horizontal scrolling shoot'em up and a racing game where two players compete on a splitscreen with one player racing his spaceship above and one below.
The recently released sequel to Dark Nebula.