Check out the following great communities. We have on the one hand the Dead Island Forums and on the other the Hard Reset Forum. Both forums were created before release of the games.
The Dead Island Forum grew very fast (and still growing) with currently over 2000 registered members and is definitely the number one stop for everyone looking for infos, help or just want to join the conversation.
The Hard Reset Forum is pretty new with much the same potential as above and should also be your number one stop for anything Hard Reset depending.
So if you are intersted in one of those games you should definitely take a look on the sites mentioned above.