As most time waster games, you have to fork money in order to get any sort of modicum enjoyment, unless you want to keep watching ads every 60 seconds. This problem gets more aggravated by the timed events. In this one, for example, we have to make soldiers out of inmates and we are given 4 days to do it, but their training takes 6 days. The only way to reduce the training time is by building extra buildings that you can only get with gems via real money. $15 to remove ads? Dear Lord.