The game takes place on Vega 4 in the city of New Shanghai. During some underground construction, a work crew came upon a species of aliens, who attacked the workers and then quickly moved to the surface. The people of New Shanghai, unfamiliar with the xenomorphs, were quickly overcome, but not before broadcasting a distress signal to Earth which was also received by a passing ship of Predators. The Predators went to Vega 4 to hunt this species of aliens rather than hunting down humans as prey because it was decided that these aliens were more of a challenge than humans. After completing the stages of Vega 4 the player travels to the Orion Nebula, the region of space where this species of Aliens came from. The final boss, the queen alien, can be found there.
Stages[edit]
There are 6 stages which each either 1 or more parts in the stage. 5 of the stages have alien bosses who each possess different powers from the animals they gestated in during their life cycle.
- Stage 1 boss: Aquatic Alien, having emerged from a dolphin.
- City
- City Sewers.
- Stage 2 boss: Gorilla Alien, a beast that came from an ape.
- The Woods.
- Stage 3 boss: A phalanx of Chestburster alien young.
- Vega 4 Alien Hive.
- Stage 4 boss: Bat Alien, a winged alien that emerged from a giant bat.
- Space Port.
- Stage 5 boss: Snake Alien.
- Spaceship 1, corridors
- Spaceship 2, engine room
- Spaceship 3, bridge.
- Stage 6 boss: The Queen Alien.
- Orion Nebula.
- Alien Hive (looks similar to stage #3).
Stage 1[edit]
In this stage, enemies can be knocked off the left or right of the screen (but aren't killed). If this happens, they will always return with a jumping attack.
A guaranteed method to defeat the first boss is to stand in the spotlight, and use the slide attack as soon as the queen jumps out of the water. While a slow approach, it is the safest since there is no change of being damaged.