Always on the look out for a good deal, Humble Store recently announced their Square Enix sale and there's some good choices for cash-strapped Linux gamers.
- Deus Ex: Mankind Divided™ - Digital Deluxe Edition - 85% off
- Tomb Raider - 85% off
- Rise of the Tomb Raider: 20 Year Celebration - 80% off
- Tomb Raider GOTY Edition - 75% off
- Lara Croft GO - 75% off
- Life Is Strange™: Before The Storm - 70% off
- Life Is Strange™: Before The Storm Deluxe Edition - 70% off
They do also list Shadow of the Tomb Raider and Life is Strange 2 on sale with Linux icons already (scroll down, they say Coming Soon), these are two games currently being ported by Feral Interactive.
For those curious, I did recently speak to Feral about this and they told me "Pre-release: use a Linux machine to buy the game, then install it on Linux once it's been released. This is true of Humble as well as Steam."—so there should be no issues buying it now according to their official stance.
There's a number of other top titles included in the Square Enix sale which may work with Steam Play, take a look.