I've just started checking out the HL2 modding scene, and I'm impressed with some of the stuff I've found so far. I've tried:
Hidden: Source - I love the concept, but it seems rather harsh on the newbie and difficult to get into.
Goldeneye: Source - Nothing amazing, but it's pretty fun. Does a decent job of capturing the feel of the original while not seeming overly outdated.
Dystopia - This one is excellent. It reminds me of UT2k4's assault mdoe, but I think this one may be better, with the cyberspace and customization.
Pirates, Vikings, and Knights - It's in an early state, but this one is very promising. The gameplay is fun and fairly unique, and the different maps and modes are well-done.
And I've played Garry's Mod, of course.
Hidden: Source - I love the concept, but it seems rather harsh on the newbie and difficult to get into.
Goldeneye: Source - Nothing amazing, but it's pretty fun. Does a decent job of capturing the feel of the original while not seeming overly outdated.
Dystopia - This one is excellent. It reminds me of UT2k4's assault mdoe, but I think this one may be better, with the cyberspace and customization.
Pirates, Vikings, and Knights - It's in an early state, but this one is very promising. The gameplay is fun and fairly unique, and the different maps and modes are well-done.
And I've played Garry's Mod, of course.