I've been running games every week for 14 years and this is my favorite System/Setting by far. The tools that Kevin Crawford gives to the GM are powerful and freeing. This product is worth the purchase for the Faction system alone. If you want a game that enables you to be creative, and then gets out of the way, this is the one for you. It can also be modded for a fantasy setting without much difficulty and I currently perfer it to D&D.