No, not your hair on a Monday morning. Natural disasters! If you have some time to spare, check out Stop Disasters which is a joint project of the UN and International Strategy for Disaster Reduction.
Each scenario is a different location with a specific natural hazard against which you must protect a village or town. The game does a great job of educating the player about making good decisions regarding fortifying the environment without being boring or dry. Another solid explicitly educational game to add to the list I put together at my post “quick educational gaming links.” No, maybe not as addictive as line rider, but still fun.