Defending helpless people against the alien invaders is the well worn theme of this game. The fight has various stages ranging from shooting at the alien ships with a ground-based laser to shooting it out in spaceships.
The graphics are large and colourful but not very realistic or fast moving. The sound is adequate by can be annoying. Gameplay is simple and curiosity about what the next stage is like brings you back for more. The game is well priced and worth buying.