Awesome upcoming space-shooters with linux ports:
Enemy Starfighter: http://enemystarfighter.com/
Vids:
http://youtu.be/63RG1qmItG8
http://youtu.be/3cGQS15Golo
Awesome Homeworld2 style, cant wait to play!
Wings of Saint Nazaire: http://www.wingsofstnazaire.com
Vid: http://youtu.be/lTcHSGn2h1s
Really cool modernized 2.5D style.
Sadly both are closed source, but one thing really stands out: both use rather simple graphics, but put a lot of JUICE (http://freegamer.blogspot.com/2012/05/d ... -game.html ) into it, thus making the game feel awesome. Which I guess is the story most FOSS games still have to learn (e.g. it's not about the normal-maps or the advanced antialising, but the cool and efficient use of artist made SFX, e.g. JUICE that make a game cool).