I've tried it, however it does not run well on my laptop.
Minimum requirements for this game is video memory of 512 mb and graphics is not that good to be worth that much video memory.
Game it self is rather fun and interesting, but there are still many bugs: Zombies are stupid (can't path around obstacles), climbing has no proper animation, zombies often attack window glasses (you can jump through window glasses!), military zombies have higher gun skill than you have, AI can sometimes see you through wall, you can attack zombies through wall and many many bugs. But none of them hinders gameplay by too much, so all's good
It's not a shoot-them-all-up game, you should avoid large masses (lack of ammo and reload time) and controls are bit off my taste, what makes it hard to sneak around. Then again, closing door behind you, savaging house from kitchen to kids room (guess where extra supply of .32 ammo was?), hearing door being broken down on kitchen floor and rushing down on first floor, jumping through window and running are quite memorable gaming events.
I'd rate it "B", despite all the lagginess (video card) and game issues, Fort Zombie is somewhat nearest thing to my ideal zombie game.
PS Keep away from churches and conserve your ammo.