Does anybody here play Battle Cats? It's a cool TD game. It's a great time waster and the leveling up makes it horribly addicting. You can enter this code g8tp0
in the main menu once you reach level 7 for free xp which you can use to upgrade your stuff. I only need 10 invites for a free character unlock so I'll delete my code once I get it.
Here are a few more awesome games by ponos that just dropped to free so pick them up while you can! Enjoy!