I was bored one night and popped in one of my favorite 3D shooters, Blood II, and after playing a bit, figured I'd check the site for patches and whatnot....

To my surprise, the company Monolith has placed the full source code of the game.

I'm talking both Client and Company versions of the code....

Those interested, check it out Here

(Maybe more gaming companies will place their codes on the web...?)