I love games that give me small vertical slices of a world, and this one managed it in spades. (How do people do all this in the time limit??? I'm blown away) I also like that prisoners dying has repercussions gameplay-wise that mirror the weight of your actions. In general, your mechanics are very flavorful. The drums also seemed to kick in dynamically on my first playthrough, but didn't quite line up the next time - I think making it change on the fly once there's only a few prisoners left would be a nice touch.
Great job!