DISCLAIMER: Despite the suggestive name, nothing in this post is illegal. It's just a name.
http://www.piratekart.com/
I figured this kind of thing would garner special interest, considering this is a hobby game-making community. As you might expect, it's a grab-bag of quality; some games were awesome, others I couldn't get to work at all. They all run through a single .exe, so it's not like you have to install every one, and I've been having loads of fun just pressing the Random Game button and seeing what comes up. So I thought I'd share.
Rape A Scientist
Mario Macross
Hairy Chestival
Shit Snake
Shoot-Um-Art
Super Cult Tycoon 2 : Deluxe Edition
Space Phallus
Strut Simulator
Every Sperm is Scared
You Have to Put the Candy Cane in the Stocking
Nudists Gone Wild
Jazz, the non-interactive Jazz Simulator
Jaws Leashed: Mustach Edition
Let's Typing Some English
Lick the Pineapple
Licorice Theif
Holy What?