The goal is to rescue the astronauts which are stranded on the lunar surface (rather platforms) by maneuvering your lunar vessel onto one of three platforms while dodging the asteroids. Of course that's half the mission. Once the astronaut is beamed abroad you must safely return him to the lunar spaceport.
Thr-ust-eroid is a one button game, you have a ship, which keeps falling unless you give it a Thrust(spacebar). The object of the game is to avoid oncoming asteroids, watch your fuel level and catch fuel barrels and travel the maximum possible distance.
In Asteroid's Revenge I,II, and III. The asteroids were only crashing to save themselves. It has been a losing defensive battle and millions of asteroids were slaughtered. Now, one asteroid has decided to take the fight to the humans and destroy them. He has gone on a rampage!