Aliens is a 1990 run and gun video game developed and published for arcades by Konami. It is based on the 1986 film of the same title. Two players can play the game cooperatively in addition to single-player.
Aliens is primarily a side-scrolling shooter in which the player must defend against various Aliens, with certain parts of the game switching to a third-person rail shooter perspective. Players can play as either Ellen Ripley or Corporal Hicks, who both begin the game with a smart gun and can upgrade to other weapons such as flamethrowers and missile or grenade launchers. The player is given several health points, one of which is lost if the player is attacked by an Alien. The player loses a life if all the health points are lost, and the game ends if all the player’s lives are depleted. Boss enemies are encountered at the end of each level, with the final boss being the Alien Queen, which the player fights with a power exoskeleton loader. A two-player mode is also available. The enemies range from standard ones seen in the films to specialized ones created exclusively for this game. When fighting the Alien Queen, two victorious outcomes are possible. In the first, the player simply opens the airlock, as in the 1986 film. If the player chooses, they can fight the Queen further, wearing her down until she bursts apart.
The arcade game made its worldwide debut at the Amusement Trades Exhibition International (ATEI) in London, United Kingdom. In Japan, it was exhibited at AOU in February 1990, and then received a wide release in March 1990. It made its North American debut at Chicago’s American Coin Machine Exposition (ACME) the same month.