Steam Games that have CD-Keys which can be redeemed on GOG or Vice Versa?

Stalker clear sky
witcher 1 and 2

The Witcher series can be redeemed on GOG. there are no games that do the reverse.

The Witcher or The Witcher 2 Steam keys can also be redeemed on GOG. I don't think there are many more, if any.

Some developers will take requests for keys on alternate platforms if you're willing to give them sufficient proof that you already own it. I believe this is the case with the Mount & Blade games.

As convenient as Steam is, I'd love to be able to have as much of my library as possible on GOG as well. GOG's installer approach is better for dealing with lack of internet access, and they take a lot of care to improve compatibility of older games.

Do you get a CD key when buying The Witcher 1&2 on steam? You should, no?

As to The Witcher games - GOG keys do not redeem on Steam however, Steam keys do give you a back-up, drm-free copy on GOG.

I was pretty sure this was the case but the GOG key I gave the OP did not redeem on Steam - so it's been tested...

So I've just purchased Witcher 1&2 on steam, and tried to redeem both here https://www.gog.com/redeem

It worked for Witcher 1 but for Witcher 2 it said "The Code is invalid."

/edit nvm, it worked here https://www.gog.com/witcher/backup

Still weird.

(btw. I've bought them today, and it says that the key runs out on 08.09.2015. Don't forget to activate/backup it.)

I tried all Stalkers and they don't work.

http://www.gog.com/reclaim

Lists some games currently redeemable on GOG from Steam or other cd keys. They're looking at expanding it eventually :)

AFAIK It's only the games here: http://www.gog.com/reclaim and The Witcher 1 & 2. Note that you have to enter the CD found inside Steam or in-game (SoC) not the Steam key itself.

The S.T.A.L.K.E.R games and Witcher 1 & 2.

About time I can redeem my Painkiller Black Edition Steam key on GoG :>

S.T.A.L.K.E.R: Clear Sky
game key from Steam - error :(
free key from Polish gaming magazine CD Actrion - Ok =)

S.T.A.L.K.E.R: Call of Pripyat
game key from Steam - Ok =)

S.T.A.L.K.E.R: Shadow of Chernobyle
game key from Steam - error :(
free key from Polish gaming magazine CD Actrion - Ok =)