A great game I played that has a "Shocking game mechanic that teaches you something", is called Rebel Inc.[0] The game is basically a sandbox inspired by the war in Afghanistan. One of the mechanics is in order to win battles on the map, you need airstrikes in order to gain ground. The downside to more airstrikes is that it leads to civilian casualties. You are basically given a choice between fewer airstrikes or more airstrikes and covering up any civilian casualties.