Never let it be said that it's a bad idea to put out free stuff. I downloaded Mike Tresca's free zombie supplement from his own website a long time ago and much of the material has been recycled and refined into this fine product. I was pleased to see 'Tresca's' wry wit and knack for imaginative gaming meet up with the good folks at RPGobjects.
This PDF is a HUGE improvment on Tresca's older work and worth every penny, lest you be tempted to track down the freebie. The layout is a bit thick in places and I found the screen version hard to read under certain conditions. The green over the short story included made for hard reading. I recommend getting the print version. The story deserves it.
As far as mechanics go, there seem to be some problems with CRs and custom zombies. As I haven't playtested it, I won't make any solid statement, just a fair warning. The zombie critical chart (yes, zombies can take criticals in this ruleset. You'll need them) is quite good and especially sadistic GMs may apply it to PCs as well.
Some of the equipment has oddball stats and is redone from the MSRD. Keen observers will note that the Remington 700 from the d20 Modern Handbook is not a shotgun, but a bolt action rifle. This is the most glaring error in the PDF, where it is referred to as a shotgun. Oh well, I guess zombies don't care that much.....
The new rules for shotguns are nice and workable for genre purposes.
The interior art is excellent as John Longenbaugh delivers his trademark stuff that fans of Darwin's World know already.
The work as a whole is true to its subject matter. It's gory, gross, funny and a little cheesy in spots. Of course, a supplement based on B horror movies should be all of those things.
If nothing else, Tresca takes one of gaming's tiredest monsters, the zombie, and breathes some desperately needed fresh unlife into its stinky corpse.
Despite some minor flaws, this is an excellent work.