ith its stunning and unexpected popularity, Angry Birds has popularized a genre that was mostly confined to flash games before the iOS boom. Many titles since have tried to replicate its success by using its puzzle and slingshot elements to their advantage. But of course, nothing has topped the multimillion dollar franchise since its inception. Now while I seriously doubt that Zen Studios wanted to get a crack at the mountain of cash that Angry Birds generated, there's no denying that their latest XBLA title, CastleStorm, at least takes some cues from the popular series. However, these are where the comparisons stop, as CastleStorm aims to rejuvenate this style of gameplay by adding tower defense, action, and even RPG elements into the mix. All these vastly different mechanics add up to a great idea indeed, but one that unfortunately threatens to spoil the simplicity that made its inspiration fun to begin with.