Youyungames are working on a new 3D fighting adventure game named HurricaneX2 for the 12th Independent Game Festival.
Attempts to port the game engine to GNU/Linux are being made and there are a very good chances for their success.

HurricaneX2 is a 3D Kung Fu fighting game developed by a Chinese Kung Fu practitioner. It [...]

Trauma is a flash based game similar to Machinarium (in technology, not in gameplay or theme), so it should run on any OS.
It was designed by Krystian Majewski and will be available for free as a “website flash game”, but a “download” and “box” versions will also be available for a [...]

Aquaria is an Underwater Fantasy adventure game by the indie company bit-blot.
A Windows versions was already done and they are now working on the GNU/Linux client that will be released soon.

An Underwater Fantasy World to Explore
A massive ocean world, teeming with life and filled with ancient secrets. Join Naija, a lone underwater dweller [...]

Hothead Games the developers of the Penny Arcade Adventures series for GNU/Linux, Mac and Windows are working on a new cRPG adventure game names DeathSpank.

While a GNU/Linux client is still unconfirmed I’m sure it will be done like with their previous games.

DeathSpank is a funny and comical combination between The Monkey [...]

One of the “The Legend of Crystal Valley” developers posted about the GNU/Linux port a year or two ago at UbuntuForums, and now after the Windows version has been released the GNU/Linux version is finally confirmed and under way.

The Legend of Crystal Valley is point and click adventure game with beautiful graphics, and magical world.
It’s [...]