Alien 3 is a side-scrolling action-platformer based on the third installment of the Alien film franchise. Players control Ellen Ripley as she navigates the treacherous prison colony of Fiorina 161, battling hordes of Xenomorphs and hostile guards. The gameplay features a mix of combat, exploration, and puzzle-solving, with weapon upgrades like a pistol, spear, and flamethrower. Notable features include a motion tracker for enemy detection, secret bonus levels unlocked via passwords, and digitized sound effects taken directly from the movie to enhance the atmospheric tension.