Holyspirit is a good-looking hack & slash game with (rendered?) 3D graphics, which I unfortunately was only able to run using wine (and it wasn't very stable either: entering some areas and saving would cause it to freeze).
It appears however, that it should be very simple to make it compile on Linux, somebody will just have to figure out how to make Code::Blocks (.cbp files is provided) find SFML, a SDL alternative that is used by Holyspirit and provide compile instructions.
DotModeler is a 3D pixel editor which could use non-AZERTY language keyboard bindings and a little bit of English-language documentation (or anything that can be easily translated).
Kwest Kingdom is a Kwute roguelike which even a Nethack-hater like me can love! Here's a YT video [TO] of the kewtness.
I haven't been able to compile the game (I think) but it apparently has 64bit Linux binaries in its GIT repository and Windows binaries for download. Still, I think the Makefile might use some cleaning up. Volunteer! For cuteness in FOSS games! EDIT: My fault, see comments for clarity!
Summoning Wars is the third Diablo-like in the last two months you read about here. It uses OGRE but unfortunately also the non-free RakNet and could use some alternative library support. (Hintedy hint hint.)
EDIT: Apparently the version used is an old GPL-compatible version of RakNet. I will report, as soon as I know more. You can follow the discussion here.