The game for NES Alien 3 or "Alien 3", is a platform action game developed on the plot of a fantastic, horror film of the same name about aliens who penetrate and live in the human body.
In the storyline of Alien 3 the heroine - Ellen Riley gets to the planet prison and along with her on this planet there is Alien, which begins to multiply rapidly and infect all the prisoners. The task of the player is to find infected prisoners and neutralize them before reincarnation into an Alien. Each level must be searched for and neutralize all of the prisoners, and players are hindered by Aliens who prowl the level and interfere with the limited playthrough time.
In each level, aside from taking out the Infected, the player must find a way out, which is often a more difficult task than searching for the prisoners. Every two levels the player will face a boss battle, and in the final level two at once.