The app challenges players to destroy aliens and rescue astronauts within a 10-second fuel limit per level. Players earn points for enemy hits, mine destruction, astronaut rescues, and fuel conservation.
Command an orbital defense platform to defend planets against waves of alien invaders. Build and upgrade weapons like pulse lasers and photon bolts. Each invader has unique behavior, requiring strategic weapon combinations to complete missions.
The app presents unlimited levels with random layouts and three difficulties. Players can select different spaceships and face various enemies with increasing difficulty.
