The indie developer Charlie’s Games is working on a GNU/Linux port of Bullet Candy Perfect which hopefully be released soon.
As with many of their other games the price will be 1USD + donations.
Bullet Candy Perfect is a fast space shooter that will feature flashy graphics, cool techno music, loads of enemies and fast game.

About
Bullet Candy Perfect is a fun shoot-em-up game, with sharp, super smooth 3D graphics and a cool techno soundtrack. The game is all about honing your skills to perfection as you attempt the perfect run!
Along with a host of score and power-up techniques, the game uses a tactical suicide mechanic that allows you to cheat an unpleasant death at the hands of your enemies and keep your bonus weapons and score multipliers intact.
To help you on your way to the perfect run, Bullet Candy Perfect keeps track of your skills as you improve with it’s Perfect Points system, and assigns a ranking based on your ability in game. There are also 20 challenging achievements to obtain, as well as a global online high score board.

Screenshots

Game Play Video
[youtube=http://www.youtube.com/watch?v=DJE_uIAw6zE&hl=en_US&fs=1&]

Links
Bullet Candy Perfect
Charlie’s Games