
Unsupported anti-cheat
The game installs fine, opens the initial loading screen and then shows an anti-cheat error message.
Also tried default Proton and Proton Experimental with the same results.

When I start the game, it uses all my RAM(32GB RAM,16GB swap) in seconds. The DE is unusable (no RAM), I have to kill the game via console.
For me this means: do not start under any circumstances! Therefore also no tricks tried.

PC Freezes, both as Steam/EpicGameStore versions. Have to unblock PC using [SysRq]+RE
Was a nice game in ClosedBeta when i played it, wanted to try again after a few years, too bad...
game starts but never shows a screen
The game starts without a window and spends a long time grinding and computer is unusable while it does. Message logs show repeated errors attempting to read optical drive despite messages saying the drive is empty. It finally is killed after running out of memory "Out of memory: Killed process 176909 (Chimeraland.exe)" after which the computer is usable again but both Chimeraland and Steam have been killed.
Tried some proton versions, none worked.
Game is borked.

Locked up my system completely when attempting to launch the game.
I am suspecting it is Anti-Cheat Expert that is the culprit here but not sure.
Tried with default Proton version and GE, neither managed to start up.
Crash... All my programs?
Not only crashed the game, Steam and all programs crashed too all times i tried to launch the game.