Wolfire Games Forums

The first that come to my head are dwarf fortress, ADOM, and cataclysm.
although if you are looking for a shooter you can play: tribes:ascend the already mentioned blacklight:retribution, TF2. If you have friends to play with there are plenty of free MMOs out there, like DDO for example.

I found Lugaru at fun-motion, got interested on it and downloaded the demo, soon after finishing I started to follow wolfire and saw they were developing Lugaru 2.
Fastforward some years and I finally preordered Overgrowth.

now I dont quite remember how I found fun-motion...