Fort Zombie is a focused-scope, casual RPG title in which the game world revolves around a single building – your fort – and the mission specific chunks of the small town that surrounds it. Instead of a major city or a vast countryside, player’s focus their efforts on building up a single structure, finding and training survivors, and venturing out into town looking for supplies.
I own this game. It's not that great...
They could have but forth some extra effort into getting the bugs patched or releasing some mod tools for it as the game is pretty editable already. Still, no amount of tweaking can save this game. What we do need is a game of this same concept but on a different engine like L4D.
The engine they use is really crappy. They did give a bit of support to fix the game. But they didn't give much polish to the game.