Play Contra: The Alien Wars online in your browser and enjoy with Emulator Games Online! Contra: The Alien Wars is GB game USA region version that you can play free on our site. This game has arcade, shooting, action, skill, platform genres for Game Boy console and is one of a series of Alien Contra games. If you love Alien Contra games you can also find other games on our site with Retro Games. Below you will find control for the emulator to play Contra: The Alien Wars.