Invalid Product Key
I bought this game today, and when I tried to activate the seriel - TRP4-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX - It said it was an 'Invalid Product Code'. I also had this very same issue with Settlers 7. One of the reasons I bought those two was to increase my Steam games list XD
that's because it is not a steam version so can't be activated on steam,hence why you have an invalid response
it will tell you on the game page for any game that you wish to purchase here if steam is required,please view the requirements before purchasing.
I have not seen mention that this game or Settlers 7 are ones that can be activated on STEAM. Usually they will put Steam, as a 3rd party software requirement, on the sys reqs when they sell games that are exclusive to Steam DRM. However, I am not so certain, that Tropico 4/Settlers relies " solely " on STEAM. I was curious also if the authorization keys were steam compatible, simply because STEAM is great for patching and updates. But unless it actually says it needs STEAM, I would not put too much thought into making it work on Steam. It's probably just a standard Gamersgate download. You are still getting a good game/s at a great price. I too would have thought this would have been Steam Compatible, but there are apparently not liscensed down to just the one distributor I guess.
Any steam version of a game sold here will say the following:
DRM:Steamworks (Requires a third-party download and account)
Activation:Can be activated on Steam
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