Survival Crisis Z is one of the coolest free games I've ever seen. Basically it's set in a town that's chock full of zombies, and you find yourself in the middle of all this madness. You can choose to start in on of the three human factions - SWAT, Rebels and Neutrals. You also get to choose your profession (e.g. a Doctor packs a magnum and the ability to heal himself, whereas a Hunter has a rifle and moves quicker).
The game is apparently open ended as each faction has it's own goals and there are tons of missions to do.
Basically your task is to crawl through the zombie filled streets, dash from one safehouse to another and ultimately find out what exactly is going on. Meanwhile you have to deliver packages, find people or even torture some poor bastard for stealing from your employer. Eventually you even get to conquer safehouses for yourself, thus increasing the number of your followers etc. Also you get to mix explosives or drugs if you choose to be a terrorist or a drug-lord
In a word, a brilliant gore-soaked game. It's free and the download file is about 10 MB. Also I must add that the design is top notch, from the menu interface to the blood soaked streets of the game world.
So... Unleash hell
Link: http://skasoftware.com/
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