I have a genuine version of GTL, but I found it on a usb drive in my house with no trace of where it came from. the case is nowhere to be found and likely thrown out decades ago, along with the instructions and therefore cd and online keys.

The version I have is not a steam version, but likely a genuine copied cd download.

I downloaded Altbierbude but simply cant join because I dont have a key.

Is there any way to recover the 48 hours spent downloading everything, or do I need to get the steam version (which im not positive comes with online keys)

cheers.