Metal vs Martian Home Metal vs Martian 0.0 / 5 ( 0 votes ) Your Rating? Discover Metal vs Martian – Play Free Now on GameHard! Metal vs Martian is a strategy 2D game where you need to defend your city from an alien invasion. You need to use the energy to build robots and destroy all the aliens. Create your own strategy to stop the alien invasion. Play the Metal vs Martian game at RegionGame and have fun. Categories in which Metal vs Martian is included: Board Ball 1 Player