[quote name='Mr Unoriginal']Maybe this is a stupid question, but what is the object of the game? Are the survivors trying to kill every zombie and vice versa? Can there be an end? Has the game reset before?[/quote]
Basically survive. As a survivor you can defend buildings, kill zombies, be a PKer, heal people, etc. As a zombie, you basically do the opposite of survivors and break down buildings, kill humans, etc. Teamwork seems to be very important in this game, so with AP conservation. I don't believe this game has reset before. Starting out as a low level is slow no matter what. If you want to wipe a character, I don't think there's an option to do so atm (I don't think there ever will be). Just make a new character and let the other account hibernate (after 5 days). If either of the accounts are within a certain distance (usually same suburb), both will get screwed over, as designated by the system to stop account abuse.
It's pretty much what you think it is. With the addition of skills and interaction with buildings.