City of Decay is an easy game to play, by now players have compiled tons of content on the forums and in the wiki which greatly enhances game play and game speed if read and followed.
One thing I haven't been able to figure out is why and how people have trouble leveling up. I have purposely left some lower level abandoned accounts on the server for leveling, as well as added some NPCs. I have toyed with the idea of having a limit on attacking NPCs, because if you train yourself enough at a low level, you can beat them and gain levels and levels off them.
Another thing I don't understand is why more players don't use the chat. Our IRC channel is, by far, the best way to get information about the game, people to help out in the game and even some in game benefits. We keep out unwanted guests so no one is going to cause any trouble, and we're a fun bunch to talk to. Come have some fun with us.