Crusaders of Space 2 takes the classic gameplay of Space Invaders and adds a number of modern innovations. One improvement is the ability to fire missiles at enemies. As you shoot down invaders, aliens sometimes drop missiles you can collect. An enemy might also release one of three weapon boosts. The Freeze boost, for example, stops an invader in its tracks and shuts down its weapons.

Orion invaders have reached our peaceful planet! Its your mission to counter attack them and follow them to their layers in Dimension-X. To complete your mission earth leaders gave you the cutting-edge hi-tech spacecraft X-Avenger. Blast your enemies with tons of missiles and energy-based weapons. The peace of all humanity rests between your hands!