GR: Sometimes, genre fusion just seems to make obvious sense. For instance, mixing action games with RPG elements appears as logical as pairing peanut butter and jelly. But some combinations don't have such apparent synergy. If someone asked me what I thought of mixing Angry Birds with tower defense, I'd say they were trying to cash in on two financially proven ideas at once in the hopes of creating a magical, money-printing machine. And yet, here comes CastleStorm, a game that combines the two in a unique "peanut butter and chocolate" sort of way.