errr, hl is an fps (first person shooter). It's nice, now vavle is in the process of comming out with hl2 (which uses a different engine). I played cs:source which is a knock off from hl. Cs:source runs off the hl2 engine and it's fucking sick. I'll host some screen shots for you guys.

http://cyn.ath.cx/source

Enjoy.