Enshrouded
Contributed by @Greelan
Link: Enshrouded on Steam
You are Flameborn, last ember of hope of a dying race. Awaken, survive the terror of a corrupting fog, and reclaim the lost beauty of your kingdom. Venture into a vast world, vanquish punishing bosses, build grand halls and forge your path in this co-op survival action RPG for up to 16 players.
Configured by both Windows and Linux. Runs using Proton on Linux.