The Last Stand 2 from Con-Artists
Theres a lot of resource management and searching for survivors, weapons, traps and supplies. The searching is a crapshoot, but the difference in towns, zombies and weapon styles is very nice. Stay away from the shotguns, especially the sawed-off, they take far too long to load and you will be overrun quickly. Equip them to a survivor. Go with the MP5 if you find one, and have your chainsaw as a backup (also a good practice in real life).