Martians have landed on earth and it seems like they don't want to be friendly! Take your gun, comb your mustache and let's start shooting bullets! Hey Cowboy, can you kill them all? Here you can play Cowboy VS Martians game and watch its walkthrough for free in friv2013.com. Cowboy VS Martians is an amazing game from our list of Friv 2013 games.

Use Left Mouse button to Shoot, Use Move Mouse button to Aim,

shooting, gun..