Ok heres what i had done.I bought Gold at Matrixgames. I registerd my serial on the site. I noticed that their was no steam key for Gold. So i went and registerd gold for the Base game Panzer Corp, i guess they both have the same serial number, cuz it worked.When that seemed to work and then got a steam key for it.
PANZER KORPS is a trademark of Hoplite Research, LLC. Filed in May 24 (2011), the PANZER KORPS covers Computer game software for use with personal.
I used that to get it here on steam. When i noticed that panzer corps for the steam version was not gold i went and copyed all the files from gold and pasted them to the steam version. It works, when i boot it up on steam i get a Auto start or pre menu thingy, and it says gold version on it. When i go to play the game i can see and play the other nations(like Soviet Corp, ect) Also no i cant see the DLC's in the liberary. Then again why would i right, after i did all this? The Gold edition is a compilation of all Panzer Corps games, so in your Slitherine account, you'll have to register separately the serial number on each of the individual games with the exception of the Grand Campaign Mega Pack: Panzer Corps Wehrmacht Grand Campaign '39 Grand Campaign '40 Grand Campaign '41 Grand Campaign '42 Grand Campaign '43 East Grand Campaign '44 East Grand Campaign '45 East Grand Campaign '42-'43 West Grand Campaign '44 West Grand Campaign '45 West Operation Sea Lion U.S.
Corps '42 U.S. Corps '43 U.S. Corps 1944-1945 Afrika Korps Allied Corps Soviet Corps Then, you'll have to redeem Steam keys for each one of the games and activate them on your Steam account.