Clicking on the link "vendetta" while @ www.opengl.org/applications/games/linux/
will get me "vendetta.guildsoftware.com could not be found."
Also the link to vendetta doesn't even exist for directories .../games/macos or .../games/windows.
I mention this becuase as a linux noob www.opengl.org was my first stop to find a 3d space simulation game for linux. Stubborn I did search on vendetta anyway and success, however i think many might not have pursued further. Anyway my two cents.

http://happypenguin.org/

Should be your first stop.