Alien³

Alien 3 is video game based on the movie sequel of the same name. The plot of the movie picks up directly after the end of Aliens. Ellen Ripley, the main character of the Alien series, is in cryo-sleep aboard the space ship Sulaco. Unfortunately, an alien or two has stowed away on the Sulaco, and wreaked havoc within the ship. Thus, it crash lands on the prison colony planet Fiorina 161. Ripley and the unarmed prisoners have to figure out a way to survive the alien who terrorizing the colony until help arrives.
The game play of the various Alien 3 conversions varies from platform to platform. The Genesis Alien 3 game is side scrolling action game with large maze-like levels. In each level, you have to rescue all the trapped prisoners and then make your way to the exit, all while surviving multiple alien attacks.
Well what would have happened is Ripley would have started wiping these aliens out with a lot of shooting an blowing stuff up. She also would have found that the Aliens were well infested on the Prision planet and even though there were like only twenty guys, the aliends somehow must have spawned from rats or cockroaches or something since they were every where with no real hosts (yeah is a dog in the movie but I don't think there were stray dogs running around all over the place on the prison planet.)
So anyways, your Ripley. You wake up to another infested world and decide to start killing all the aliens you find, including some Queen aliens (somehow they became quite frequent on this planet.)