Karios Games, the development company behind MonsterUp, has announced they are offering their MonsterUp Adventures for free on Windows Phone for a short period of time.

After a short vacation in Murloland, the adorable Monsters return to TrelloLand only to discover that the evil Skotos has kidnapped the Trella! It’s time for action! Make your way through the land, have fun, collect the gems and defeat the evil Skotos and his minions before they take over TrelloLand! The monsters are back…and so is the fun!

This game runs on Windows Phone 7.5 and Windows Phone 8.

Even if you are not interested in the game right now go ahead and grab it for free then it will always be free under your Microsoft account.

See MonsterUp Adventures in the Windows Phone Store.