Hello @all,
I want to play SWAT 3 GOTY, but it wants a CD key, after clicking on swat.exe. I can not find my key on gog.com or in the folder of SWAT 3. Where I can get my CD key?
Thank you!

You probably already found out the answer but I will answer for future people.

In the Swat 3 folder you will find a file called "swat3.reg". If you are getting an error about the missing CD key you can re-install the key into the Windows registry by double clicking this file (I think this still works on recent versions of Windows anyways - you may have to give it Admin privileges).

Either way the Steam version and the GOG.com version both use the same CD key. Type this into Swat 3:

BYP4-DAB2-LUT5-XEG6-3352

Note to moderators: everyone who owns this game on Steam or GOG.com have the same CD key. It is not piracy. This does the same as if he used the game.reg file to register the game. Please forgive me if you view different. Just trying to help.