3 Minutes to Midnight is an upcoming comedy adventure game from Scarecrow Studio. It was funded on Kickstarter and their latest development update sounds great.
If you've not heard of this one before it's styled much like classic LucasArts point & click adventures but with some twists including puzzles that have many solutions, lots of hidden content, actions that have consequences so your next run may be quite different and much more to make it replayable. Check out their original trailer:
With their development update out they make it clear it's going well, and they've designed a special automated test that can run through the entire game that they've been repeatedly using to help development move along. While it took time away from the actual game development, they said this AI player has already helped them find "over 60 extremely difficult-to-find game-breaking bugs". So I have high hopes for this to be nicely polished at release.
As for Linux and Steam Deck support directly, they made it clear their Linux testing has showed their Native version working across Fedora, Mint, and Arch and they "have yet to find any unexpected issues". That's an impressive level of support, you don't see many indie developers doing that! It will also have gamepad support, steam cloud saves and when talking about Steam Deck they said "Since SteamOS is a Linux-based operating system, 3 Minutes to Midnight will therefore be fully compatible with Steam Deck.".
You can follow it on Steam.