This is a collection of games with native Linux builds - meaning that you can run them without any additional emulation software like Proton or Wine. These games were chosen because I personally enjoy them or find them interesting. They are listed in no particular order.

Some games are available from various sources. You will need Flatpack enabled and Flathub added a source for the 'Discover Flatpak' links to work, click here for details.

Free Games

OpenTTD

Official Site: https://www.openttd.org/
Discover Flatpak: appstream://org.openttd.OpenTTD
Flathub: https://flathub.org/apps/org.openttd.OpenTTD
Steam: https://store.steampowered.com/app/1536610/OpenTTD/

Zero-K

Official Site: https://zero-k.info/
Steam: https://store.steampowered.com/app/334920/ZeroK/

0 A.D.

Official Site: https://play0ad.com/
Discover Flatpak: appstream://com.play0ad.zeroad
Flathub: https://flathub.org/apps/com.play0ad.zeroad

OpenHV

Official Site: https://www.openhv.net/
Discover Flatpak: appstream://io.github.openhv.OpenHV
Flathub: https://flathub.org/apps/io.github.openhv.OpenHV

Hypersomnia

Official Site: https://github.com/TeamHypersomnia/Hypersomnia#intro
Steam: https://store.steampowered.com/app/2660970/Hypersomnia/

Space Station 14

Official Site: https://spacestation14.com/
Discover Flatpak: appstream://com.spacestation14.Launcher
Flathub: https://flathub.org/apps/com.spacestation14.Launcher
Steam: https://store.steampowered.com/app/1255460/Space_Station_14/

SuperTuxKart

Official Site: https://supertuxkart.net/Discover
Discover Flatpak: appstream://net.supertuxkart.SuperTuxKart

Cataclysm: Dark Days Ahead

Official Site: https://cataclysmdda.org/
Discover Flatpak: appstream://org.cataclysmdda.CataclysmDDA

Cataclysm: Bright Nights

Official Site: https://docs.cataclysmbn.org/
Discover Flatpak: appstream://org.cataclysmbn.CataclysmBN

Widelands

Official Site: https://www.widelands.org/
Discover Flatpak: appstream://org.widelands.Widelands

Thrive

Official Site: https://www.revolutionarygamesstudio.com/
Discover Flatpak: appstream://com.revolutionarygamesstudio.ThriveLauncher