Humble are doing a pretty good bundle once again with the The Humble Daedalic Bundle 2018 that has some good Linux games. There's a few non-Linux games too, so I will leave them out.
For pay what you want, you will get:
- Deponia: The Complete Journey
- Anna's Quest
If you decide to pay more than the average, they will give you:
- Deponia Doomsday
Finally, if you pay at least $12 (approx £8.96) you get the excellent Shadow Tactics: Blades of the Shogun, a game that's really quite good and the last patch improved performance dramatically. They will also give you $2 wallet credit if you've subbed to the Humble Monthly.
Overall, that's not a bad bundle at all. Check it out here.