MaxFulvus: Imagine if you need to link a Galaxy account to Prime Gaming to reclaim Shadow of Mordor GOTY...
ConsulCaesar: That would be a first, so far all the GOG games included with Amazon Prime provided a code to redeem on the website.
Yeah, but it wouldn't surprise me if they started doing it that way.
EA games until very recently were given as a redeemable key. But when they gave away Mass Effect: Legendary Edition during Prime Day, you needed to link your Origin account.
So it's possible that they'll implement this for every game given, that are redeemable on other stores/launchers.