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Only certain keys can be activated on Staem
TimeShift isnt one of them
It's not a SteamWorks title, there is no way to activate retail keys.
It actually is a SteamWorks title - https://steamdb.info/app/10130/
Also the question already has been answered.
If you get a error message like that one above, that means the key don't work on Steam.
It's a Steam title not a SteamWorks title. If it was, you'd be able to redeem retail keys.
I've heard of developers doing such things in the past, especially if you have issues installing the game from the original media. You should contact the developers directly because the publisher probably wont care.
I dug out the contact form for the developer Saber.
http://saber3d.com/contact/