I didn't make it!
I recently checked out this game...I figured 'What the hell, it's free', and so I downloaded it...turns out to be pretty damn sweet, the engine is the same source engine used in HL2 which makes for some pretty intense gameplay. Plus they have a ton of maps.
If you're interested, go to http://www.kumagames.com/ and check it out yourself.
Jeff is a missing boss
28th July 2002
It doesn't use the Source engine IIRC, and i haven't heard one good thing about it