Looks like the June 2020 Humble Choice is a pretty good one filled with some highly rated games. Time to take a quick look over what's on offer.
Humble Choice (prev Humble Monthly) is a curated bundle that changes each month. You pick a tier with different prices to get access to the huge Humble Trove (a collection of DRM-free games) plus a Humble Store discount and then you pick between 3-9 games to keep. This month you can pick from (bold titles support Linux):
- Remnants of Naezith
- Stygian: Reign of the Old Ones
- Felix the Reaper
- GRID - Ultimate Edition
- Hellblade Senua's Sacrifice (works with Steam Play)
- Men of War: Assault Squad 2 - Warchest Edition
- The King's Bird
- The Messenger + Soundtrack (works with Steam Play)
- The Stillness of the Wind (works with Steam Play)
Of the titles that support Linux there, it's a damn fine selection and the others verified to work well with Steam Play Proton are good too.
This month there's also the Humble Original, Before I Forget, a first-person narrative adventure about a woman with dementia which also supports Linux. Humble Originals are smaller new games that at the time are only available through Humble Choice (usually release everywhere later).
If you're interested, check out the Humble Choice here.