Play Contra: The Alien Wars emulator game online in the highest quality available. Contra: The Alien Wars is a Gameboy game that you can enjoy on Play Emulator. This GB game is the US English version that works in all modern web browsers without downloading. Contra: The Alien Wars is part of the Arcade Games, Action Games, and Platform Games you can play here. PlayEmulator has many online retro games available including related games like Contra: Hard Corps, Ben 10 Ultimate Alien: Cosmic Destruction, and Contra 3: The Alien Wars.