: If you have DLCs, you may need to add a DLC.txt file in the settings folder of the emulator to unlock them.

: Run the game using TheQuarry.exe . It should now bypass the standard Steam check. A few tips:

Create a simple text file named steam_appid.txt in the same folder. Open it and type the App ID for The Quarry: 1577120 . Save and close the file.

the original file to something like steam_api64_o.dll (keep it as a backup!).

: Get the latest files from the official GitLab repository or a trusted community source.

Are you having trouble with a or is the game failing to launch ?

: Go to the directory where The Quarry is installed. Look for the folder containing the game's executable ( TheQuarry.exe ), usually found in The Quarry/Binaries/Win64/ . Replace the DLL : Find the original steam_api64.dll in that folder.