It's really just Frozen Synapse
(which is a pretty good game. Not quite as good as it should be with such an intriguing central mechanic, but pretty damn good).
But, if you pay above the average, you get a few games which were in a previous pseudo-bundle. Notably Trine
which is both beautiful
and very good
. Really luscious 3D and it worked flawlessly for me (across 3 different distros).
Again, Linux users are paying the most. Doubling the Windows average, currenlty <3
Hope you don't mind my posting this here.