ok something very fun and funny
postal 2
Download free demo here
http://www.gopostal.com/postal2/index.php
Forget what you know about first person shooters. Walk a week in the Postal Dude's shoes.
Freely explore full 3-D open-ended environments. Interact with over 100 unique NPC's including Gary Coleman, marching bands, dogs, cats and elephants, protesters, policemen and civilians, with or without weapons.
POSTAL 2 is all about choice; experiment with everyone and everything.
And remember... it's only as violent as you are!
This is the complete POSTAL 2 single player game with several enhancements:
New Weapon of Mass Destruction
New Insano & They Hate Me modes
New Underhub & Tora Bora maps
Faster load times!
New Multiplayer Gameplay
SNATCH: Fight for the fabulous Postal Babes! Snatch the enemy babe and score!
GRAB: Battle to collect all 10 bags, each bag makes you stronger!
DEATHMATCH: Chose from 25 characters including Gary Coleman and Osama
TEAM DEATHMATCH: 19 insane teams including Team Taliban and The Gimps
14 multiplayer levels
In-game server browser
Customizeable game settings
Dedicated and non-dedicated server modes
Remote admin
Next-generation level editor
Make your own maps!