found a free game...

called NEXUIZ

it's a pretty serious download, 380MB for the zip file...it's basically a deathmatch FPS game. runs well on my XP-64 box. (whereas UT04 has gone bad for some reason)

get it here

I've only played it a tiny bit...it's based on DarkPlaces, a Q1-source-derived engine.

and I am stuck at a seemingly simple low-grav level. It's instagib, which is not my fave, and I'm doing badly...and this is an early level. Have not figured out the rest of the weapons, so previously I've mostly been lucky.