List of Open Source Games

OpenTTD https://store.steampowered.com/app/1536610/OpenTTD/

Mindustry https://store.steampowered.com/app/1127400/Mindustry/

OpenRA https://www.openra.net/

Beyond All Reason https://www.beyondallreason.info

Widelands https://www.widelands.org/

Minetest https://www.luanti.org/

ClassiCube https://www.classicube.net/