Itâ??s alive...itâ??s ALIVE! Now you can finally create the monster you've always wanted to. Introducing Monster Mayhem: Build and Battle! A box arrives at your doorstep, with the words "Monsto-Corp stamped on the side. You know immediately what this means. You will create and train the perfect monster to defend your town, Happy Valley, from creature attacks. In Monster Mayhem you raise, train and care for your own personal monster, in an attempt to create the perfect monster to defend their home town of Happy Valley. This can prove difficult with a monster a little bigger than the average home!