Anything related to Linux and gaming goes here. That is including native Linux games or running Windows games on Wine/Proton or running games on emulators on Linux.
Here are some (all that I can think of) good open source Linux native games (most of these are available on other platforms as well):
0 AD : A RTS game initially a clone of Age of Empires, now a separate game with a fully 3D engine being developed by Wildfire Games.
The Battle for Wesnoth : An absolute classic hex based turn based strategy game with many campaigns and hundreds of community made mods, campaigns and maps. (Also on Steam)
Super TuxKart : A Mario Kart clone featuring various open source project mascots as characters.
OpenTTD : An open source reimplementation of Transport Tycoon Deluxe with better graphics and mod support.
OpenRCT2 : An open source reimplementation of Rollercoaster Tycoon 2 with better graphics and mod support.
Warzone 2100 : A 3D RTS where you build custom vehicles. Originally a commercial game but later open sourced.
The Dark Mod : A 3D stealth first person game inspired by the Thief series, built with the Doom 3 engine after it was open sourced.
ioquake3 : A fork of the Quake 3 engine with various fixes, and better graphics. Requires the original Quake 3 data files to play.
Urban Terror : A Counter-Strike clone but with faster and arcadey gameplay.
FlightGear : A FOSS flight simulator.
On Linux, Steam has created a fork of Wine called Proton in collaboration with Crossover. This allows us to launch Windows games from Steam directly in Linux. To check how well your favourite Windows games run on Proton, search for the game on ProtonDB or you can test any game on Proton and report here whether it worked or not.
Some of my favourite games that run on Proton without any issues (completed most of these on Linux):
Grand Theft Auto 5
The Witcher 3
Resident Evil 2 Remake
Resident Evil 7
Age of Empires 2 Definitive Edition
Dark Souls Remastered
Dark Souls 3
Sekiro
Skyrim LE
Fallout 4
Besides these, most Valve games are available on Linux natively including Half Life, Portal, Left 4 Dead, Dota2, CSGO, etc and these are generally very stable and are on par with their Windows versions performance-wise. There are also companies like Aspyr Media and Feral Interactive who port games to Linux regularly. A few examples are:
Various Total War games
Dirt series
Civilization 5 and 6
Shadow of Mordor
Tomb Raider series
Life is Strange series
XCOM series
If you want to run non-Steam Windows games on Linux you can always use Wine or even better Lutris.
Lutris is a game manager that allows you to setup and run any type of game, even Steam and other launchers. It also acts as a frontend for games from GOG. I have used it to play Battlefield 1 and 4 on Origin using Lutris.
So, if you have used Linux and have gamed on it or are looking to game on it, post here.
Here are some (all that I can think of) good open source Linux native games (most of these are available on other platforms as well):
0 AD : A RTS game initially a clone of Age of Empires, now a separate game with a fully 3D engine being developed by Wildfire Games.
The Battle for Wesnoth : An absolute classic hex based turn based strategy game with many campaigns and hundreds of community made mods, campaigns and maps. (Also on Steam)
Super TuxKart : A Mario Kart clone featuring various open source project mascots as characters.
OpenTTD : An open source reimplementation of Transport Tycoon Deluxe with better graphics and mod support.
OpenRCT2 : An open source reimplementation of Rollercoaster Tycoon 2 with better graphics and mod support.
Warzone 2100 : A 3D RTS where you build custom vehicles. Originally a commercial game but later open sourced.
The Dark Mod : A 3D stealth first person game inspired by the Thief series, built with the Doom 3 engine after it was open sourced.
ioquake3 : A fork of the Quake 3 engine with various fixes, and better graphics. Requires the original Quake 3 data files to play.
Urban Terror : A Counter-Strike clone but with faster and arcadey gameplay.
FlightGear : A FOSS flight simulator.
On Linux, Steam has created a fork of Wine called Proton in collaboration with Crossover. This allows us to launch Windows games from Steam directly in Linux. To check how well your favourite Windows games run on Proton, search for the game on ProtonDB or you can test any game on Proton and report here whether it worked or not.
Some of my favourite games that run on Proton without any issues (completed most of these on Linux):
Grand Theft Auto 5
The Witcher 3
Resident Evil 2 Remake
Resident Evil 7
Age of Empires 2 Definitive Edition
Dark Souls Remastered
Dark Souls 3
Sekiro
Skyrim LE
Fallout 4
Besides these, most Valve games are available on Linux natively including Half Life, Portal, Left 4 Dead, Dota2, CSGO, etc and these are generally very stable and are on par with their Windows versions performance-wise. There are also companies like Aspyr Media and Feral Interactive who port games to Linux regularly. A few examples are:
Various Total War games
Dirt series
Civilization 5 and 6
Shadow of Mordor
Tomb Raider series
Life is Strange series
XCOM series
If you want to run non-Steam Windows games on Linux you can always use Wine or even better Lutris.
Lutris is a game manager that allows you to setup and run any type of game, even Steam and other launchers. It also acts as a frontend for games from GOG. I have used it to play Battlefield 1 and 4 on Origin using Lutris.
So, if you have used Linux and have gamed on it or are looking to game on it, post here.