Could Not - Initialize Steamworks Api Oneshot

: If you are on a 64-bit system but the game fails to launch, switch to the legacy build. In your Steam library, right-click OneShot > Properties > Betas and select "old_32_bit_build - For compatibility issues" .

Try these in order:

Sometimes the issue isn't the game, but the Steam client itself. If Steam is running with administrative privileges while the game is not (or vice versa), or if the Steam overlay is malfunctioning, the API call will fail. This is often caused by cached download data or a corrupted steam.dll file. Could Not Initialize Steamworks Api Oneshot