Postal 2 is chaos incarnate. Try some.
However, nothing is as simple as it seems. For example, in a twist typical of the game's humour, when you arrive at Running With Scissors' (the developers) headquarters, there is an angry mob protesting in front. You will of course be attacked soon enough. I read on the box that you can be as nice or evil as you wish, but the game doesn't give you much choice - sure you can be 'nice' and not kick bystanders around, but most of the missions involve some faction or other shooting at you, so you should probably squeeze off a few rounds their way, don't you think?
The reason I urge you to try this game is that you've probably never played anything like it. The feeling of total anarchy has never been conveyed through a game as well as this one.
This is the first game that simulates standing in line.
There's an 'open fly' button.
Once peed on, Gary Coleman pulls out an automatic weapon and starts running around firing at you. In the typical all-american megamall.
You'll attempt to get signatures with lines like "sign my stupid petition"
This is the only game where you have to pee in a cup to get your gonorrhea diagnosed and treated.
The gameplay, however, is quite simplistic and gets boring - go somewhere, get attacked, go home. The only reason to play this is if you're into a wide range of gaming styles and want the experience. "Yes, I played a game where I took a pee on someone and they threw up." So while I can't recommend this for the gameplay, I can honestly say that if you can find this for *very* cheap (or borrow it from someone) you may want to give it a...shot. The madness! The horror! The laughs...