The air stood still for a moment and then USS Tarris left the hyperspace. The onboard systems started the security scans and system checks. It took them few minutes to discover the strange phenomena in the front deck. Something was lurking in the shadows. Some alien and unrecognized life form. The security alerts were raised, commander Black notified of the hostiles. Squad has been assembled and send out to face what will unfold as the alien race. Swift and deadly predators just started their hunt.

Marines: Alien Invasion is the unique mix of tower defense with the action strategy game. You assume the role of the commander of the ship security forces and you are tasked with defending the ship. You are given command of a different troops including marine, psi tek, plasma marine or some big robots. Your tasks vary from mission to mission – sometimes you have to stand your ground, unlock some doors or make your way to the other side of the level. You might be also given the order of protecting the scientists evacuating from the level or working on some important discovery. Collect the resources on each level and unlock the upgrades for your soldiers and mechs.