Alien3 is a 1993 top-down adventure video game developed by B.I.T.S. and published by LJN for the Game Boy. It is based on the film of the same name. The Game Boy title is just one of four video games created to tie into the release of Alien3. Also produced were a Master System/Mega Drive game, a Nintendo Entertainment System game and a Super Nintendo Entertainment System game. Despite the fact all four were released under the title Alien3, gameplay actually varies quite substantially across the four titles.