Happy peasants harvesting grass. Peaceful people admiring the clouds. Then the bad guys come along and start sieging and such. You don't need much of a story when it comes to physics-based chain reaction games, but in the case of Siege Hero, from the creator of Sieger, you definitely need to know you're the one fighting on the side of good! This highly-polished iOS game features gameplay similar to Castle Crashers, Angry Birds, and even Implode!, although the sum of its well-made parts adds up to something much more intriguing.