We have two Linux games that are new to Desura that are available now.
The first is Bullet Candy Perfect. A very cool and hard shoot 'em up.
Indiedb.com
The second is Irukandji. It is an underwater shoot that again is not easy at all.
Indiedb.com
The cost of these are $2.99 each so they aren't going to break the bank for you to pick up a copy.