Portal 2, one of the best games, good story, excellent gameplay, excellent coop, good performance.

Rimworld. Also DRM free through GOG!

Celeste! One of the best games ever made, with a flawless Linux native version

Minecraft, Stellaris, and Valheim were already mentioned so I'm gonna add Neverwinter Nights.

I was going to say Factorio as well! :D Hollow Knight has a native port and is a fantastic game, but my favorite games are ones like OpenMW or DevilutionX where the entire engine is remade from the ground up and open-source

Rimworld! Probably my favorite game ever actually.

As a Linux newb...

I use steam and I can't tell which is which usually.

Terraria

BallisticNG. Incredible WipEout homage, Linux native, VR compatible, runs locked at 60fps on Deck. Fun tracks, cool ships, nice lore. Physics and mechanics are by default more geared towards classic PSX games (1, 2097, 3), with "modern" physics and mechanics (Pure/Pulse/HD with absorb, barrel roll etc.) getting an overhaul in the next version.

The Half-Life Games.

Factorio is so amazing on linux. Like the devas actually care about Linux. They care so much that went on to shit on Gnome for no client side decorations. Absolute legends. Wish more studios wer like them.

Doom, of course!

Also, OpenRCT2, and Unreal Tournament.

I guess I have to say Stellaris because it's my favorite game in general. It also runs as good or better under the native Linux version than it ever did on Windows, so points there.

Terraria

World of Goo!

Somewhere between Minecraft Java edition and a modern title made with the Steam Deck in mind, like TMNT Shreaders Revenge.

I'm just happy to see a slowly increasing support base, even if its just to support wine

Off the top of my head: Half Life 2! OpenTTD, Dwarf Fortress, Minecraft.

Xonotic?

Cube 2: Sauerbraten

Everything that is good about 90s FPS crammed into one free download.

Stardew Valley is great

Factorio is great, I'm also a fan of X4.

I will also add other games that I've played and absolutely loved them on Linux

Linux Native games that I've played

• Dead Cells
• Tails of Iron
• Dome Keeper
• Baba is You
• Slay the spire
• dotAGE
• Inscryption
• Spiritfarer®: Farewell Edition
• Psychonauts
• Just Shapes & Beats
• Bastion
• Tunnet

Open Roller Coaster Tycoon 2! You need to own an official version of the game in order to get the models and textures and whatnot, which are still under copyright. After that, you can play with ORCT2 and enjoy the expanded capabilities,

seen a lot of games with native linux ports, always need to use proton because usually the native ones won't even launch successfully. the only one that works almost 100%, golf with your friends.

CitiesSkylines, it was that game (having lower requirements for linux listed in steam) that actually made me a linux user in the first place!

@Psyhackological , the original Kerbal Space Program.

I never knew factorio has a Linux version. I hear the factory calling me again. You might not see me for a few days.

I bought Tales of Maj'Eyal from GOG and have been playing the Linux port. Yeah, I'd say it's my favorite. Even if I hate it sometimes.

factorio, i have played well over 100 hours in the last three weeks.

help

Cataclysm: Dark Days Ahead

• unreasonably realistic open ended post apocalyptic survival simulator roguelike
• similar to dwarf fortress adventure mode (allegedly, never played it)
• you will lose 3 weeks of progress
• every major release makes the game feel like a different game
• cool lore, even if it changes all the time
• puts zomboid to shame

Dungeon Crawl: Stone Soup

• the best traditional roguelike
• extremely focused design
• tedious features get cut, pure gameplay
• only (subjective) downside is the game is fairly heavily RNG dependent

Both of them are probably in your distribution repository, dcss may be packaged as "crawl" or "stone-soup".

Rimworld for me.

(I have never tried Dwarf Fortress.)

Honorable mention goes to War Thunder, while it isn't on of my favorites, I was still a bit blown away to find out it runs natively on Linux.

The Long Dark

@Psyhackological @play0ad 's #0AD game has to be my favorite