The game zombie master is a lot of fun, and I'm not quite sure how the GMOD 10 mod works,but I've found the game works very well. You never turn out as a zombie, which is a plus. Instead, a person will randomly be chosen each round to be the Zombie Master, who basically commands the zombies in an rts like form. When you play like this, I personally have found it relatively difficult. It is integral to the game experience to find a server or group of people who work together, at least it is in the map that you have to find the parts to fix a truck, as the pieces that you need to find are scattered around the level. All in all, the game is worth the download, in my opinion.