Exhauster

Exhauster is a 2D single-screen retro arcade-style action game set in an outer space environment. The player controls a spacecraft, using the flames from its exhaust to attack enemies. Enemies indefinitely spawn from a number of bases on the right side of the screen until the bases are destroyed, at which point the game progresses to the next stage. A time limit is imposed in the form of a vacuum slowly engulfing the playfield from the left side of each stage.