Alien Brigade is a side-scrolling shooting game, released in 1990 for the Atari 7800 Prosystem. Similar in style to Operation Wolf, Alien Brigade tells the story of a soldier who is forced to do battle with aliens that are invading the planet and taking over the bodies of fellow soldiers in the process. One of the last releases for the Atari 7800, Alien Brigade is one of the few games for the system to use scrolling graphics. Alien Brigade is 144K in size, making it one of the largest commercially released Atari 7800 games.