Gaming

night in the woods!

I'd personally recommend Rain World, although it has a reputation for being hard, and you'll probably die a lot so this game has to be approached with patience

The Westport Independent is a censorship simulator, in which you play as the editor of a newspaper, choosing which stories to run and how to edit them in order to avoid angering both the authoritarian government and political radicals who want to take them down, while also appeasing your journalists, who may get angry and quit if you censor their stories too much.

Firewatch - recommend you wait for a sale but its a great story game that is on steam and gog and even native Linux

tabletop simulator - tons of card and board games that you can play with your friends if it exists it might be ported has native Linux

golf with your friends - great mini golf game to play with your friends similar to tower unite golf but better has native port

american/europe truck simulator - trucking game that real truckers say is the most realistic trucking game and they try to help with all issues and is even native Linux

https://store.steampowered.com/app/1641020/my_brother_lives_in_a_canyon - my brother lives in a canyon - great story game that is made by one person and it does not take long

Bloons tower defence 6 - tower defence game where you pop the bloons to defend your base

Sayonara Wild Hearts is an absolute gem. Perhaps not "hidden" since it did get a full physical release, but I don't see people talk about it. Game is like an hour long but it's absolutely worth playing. The portal of music games really.

Also shoutout to selfy collection. idk if it counts as indie but it's low budget for sure, digital-only release, and filled with engrish, but it's a lovely game and easily the best dress up game on switch.

Pyre by Supergiant - You have likely heard of Hades by this studio, but Pyre is a whole different beast. It's basically fantasy basketball set in the underworld, with a variety of magical species with different abilities in the game. It also has (as is this studio's habit) absolutely stellar writing, music, and 3 dimensional characters.

One of my favorites over the past few years is Prey(2017) it was made under Bethesda so I wouldn’t say it’s underground, but It didn’t get the popularity and fan base it deserves. Essentially a open world (as open as a world can be in a giant space ship) that allows you to explore and fight creepy creatures. It also gives you multiple ways to solve the problems you face as well as Multiple endings and story branches to choose from. I played for 33 hours and it was so worth the price it was on sale, (wish I could remember) but it would also be worth $60 as well. It reminds me of a high polished Skyrim at certain points. Would highly recommend

Kenshi - a brutal, and sometimes janky squad free roaming game. I have far too many hours in that.
Pulsar - Lost Colony - Fun game if you have a few friends around. Pretend to be Captain Kirk - except chaos.
Rimworld -- Dwarf Fortress lite
Dwarf Fortress - Grand daddy inspiration for most other games
Torchlight - Diablo
Project Zomboid - All your top down zombie hunting dreams come true
Carrier Command - Drone carrier warfare
Nebulous Fleet Command - The Expanse.

Does X4 count as Indie?