Contra - The Alien Wars ROM download is available to play for Gameboy. This Alien game is the US English version at EmulatorGames.net exclusively. Download Contra - The Alien Wars ROM and use it with an emulator. Play online GB game on desktop PC, mobile, and tablets in maximum quality. If you enjoy this free ROM on Emulator Games then you will also like similar titles Contra and Contra III - The Alien Wars.