FreeGameDev

A group of indie devs are selling a game bundle at the moment and are willing to release the source code (although the license is not specified yet) if they reach 10000$.
At the moment, only one of the five games runs on GNU/Linux: Pakkuman's defense, a pacman game where you can also build towers to defend yourself against the ghosts.

Apart from the potential open-sourcing, some of the games also show interesting gameplay ideas.
I like the one from Rose and time for instance: "Time travel stealth game where you are avoiding copies of yourself from the past/future. "
(although from what I've seen it's a bit more like a puzzle game than a splinter-cell/metal gear solid/hitman/etc-like "stealth game". Still looks interesting to play.)

More info here:
http://indiebuskers.net/
http://www.desura.com/groups/linux-game ... se-sources

And a few videos:
https://www.youtube.com/watch?v=KsVDeFILbIw
https://www.youtube.com/watch?v=m0rQ-0dc32c
https://www.youtube.com/watch?v=IMovQOfiDf0
https://www.youtube.com/watch?v=RDsWxI1ARS0
https://www.youtube.com/watch?v=4ioptqwds4g

Interesting news, thanks for sharing!

At least one of those games is based on Unit3D (proprietary 3D engine).