Alien Breed is the first in the Alien Breed series of science fiction shooter computer games played with a top-down view, for one or two players. It was released in 1991 by Team17 for the Commodore Amiga and later in 1993 by MicroLeague for MS-DOS.
The game was based heavily, and unofficially, on the Alien films, specificially Aliens, and also on the 8-bit-era games Laser Squad and Paradroid (although the game bears some gameplay similarities with Gauntlet, with which it has been compared, as well an obvious comparison with Sega's Alien Syndrome). Alien Breed consists of the player or players having to find the lift down to the next level, occasionally setting the self destruct sequence to blow up the level above them. The players collect or purchase a variety of weapons from the space station's computer terminals. In some versions of the game, these so-called Intex terminals provide additional features such as a clone of the classic computer game Pong. Credits found on the ground have to be saved for these weapons and other enhancements, each giving the players an edge over the gradually more and more powerful Alien forces. In advanced levels, players are occasionally trapped in enclosed spaces with huge "boss" aliens, reminiscent of the Alien Queen.
The third game in the series, Alien Breed: Tower Assault, introduced non-linear gameplay; in which, some levels are not required to be completed before exiting, and the game can be completed in several different ways.
