Monster Madness Online is a free-to-play MMO shooter from the creators of Dungeon Defenders. There's a martian invasion in your neighborhood, and it's time to fight back and retake the block. You'll explore, shoot, loot, and collect your way through Suburbia with other players or against them. It's also home to simultaneous play across PC, Mac, Linux, iOS, Android, Web Browser, Or Windows Phone 8. Also available on Steam, Direct Download, & Facebook.