Armor Games Inc.’s Crush the Castle HD is essentially Angry Birds set it in medieval times and fleshed out with the barest hint of a story line. Double-tapping to fire the trebuchet takes a lot of getting used to, but it works fine once you get your timing down. Overall, Crush the Castle is a bit stodgy and lacks the avian version’s undeniable charm, but it makes up for it by letting you see blood (yes, actual, virtual blood!) whenever you kill one of its mannequin-like soldiers.