Apparently the Spring mod Complete Annihilation is rather good, although it's about to be renamed and not quite fully free of its ties to the original Total Annihilation content. The goal is to be totally Free. And it's pretty complete(ish) as a game already. There's lots of lovely screenshots.
Fun racing games are always, er, fun. Well, in demand as well. So maybe Q3Rally can strike a chord with the Free gaming public? Apparently the original Quake Rally was the best Quake mod ever, although it was never completed and all that is left of it is Quake Rally: Leftovers. There's plenty of maps and cars and it is billed as a mod for OpenArena so should be totally Free. \o/
Here's a promotional video for Q3Rally that makes it look rather ooo aaah:
Dark Phear, a classic Phantasy Star-like RPG, as reported in the Ubuntu forums. Go there for links, screenshots, and more information.
Oolite, the Elite cloney-but-better game, is getting purty with shaders it seems.
The Privateer Gemini Gold team have been fairly quiet but work is ongoing and the next version will contain much better videos / graphics to make it even more immersive. Some of it can be seen on their youtube channel although the videos are currently just very short showcases.