Because Mafia 2 is affected by not showing as owned in store. Maybe it'd be a good enough excuse for someone to finally look into this issue and fix it.

These games will be added to Amazon Luna service in June , so i expect at least two of them will be a Gog code as well on Prime Gaming .

Batman: Arkham Knight
Citizen Sleeper
Monster Harvest
SteamWorld Heist: Ultimate Edition
Perish
Haven

There is indeed some kind of a bug there.

I have all three Mafia games, all redeemed through Prime. The trilogy collection was not, as can be expected, marked as owned. But going to the game card showed that it can be bought for the total price of 0.00.

I had that in my cart, and added few other free items as well, demos and such, and when I went to check out, suddenly the Mafia trilogy had a price! It was some weird amount, maybe calculating two games owned and one missing.

So I removed it from the cart, and completed the free purchase of other titles. Then I went to the game card, and this time the game collection had a price (different than what it had during the checkout). Then I opened a new browser window, and once again checked Mafia trilogy. This time, like the first time, it was showing a price of 0.00, as it should, as I already owned everything.

I went through the checkout process again, and received warnings about those games already being owned. I managed to complete the "purchase", and another message came to the screen saying that nothing has changed in my account.

But something actually had been changed!
Previously all three games showed up as owned, but the trilogy was not owned. Now, the trilogy shows up like each of the games, owned.


Quite obviously that's not how things should go with bundles.
But at least this buggy behaviour may allow individual users to fix the annoying feature of this bundle not being marked owned even when all three games are in the library.
It seems to be somewhat random whether it works or not, but at least it worked for me.

Thank you for sharing your experience. (^_^) In the past, I had obtained the three Mafia 'Definitive Edition' games via Amazon Prime Gaming, and now 'own' the Trilogy.

This procedure had been enabled two days prior, as GOG had manually added the normal non-Amazon Prime Gaming version (differing internal product identifier) to all accounts which had (only?) possessed the Amazon Prime Gaming variant.

Previously, I had noticed the addition, and had assumed that GOG had been making an honest attempt to correct the entire issue with Mafia 2 Definitive Edition not being marked as [Owned], but, as the price had not been '0.00', I did not attempt to add to cart and 'purchase' the Trilogy.

Interesting. Thank you for the info and attached screenshots.
I have the exact same situation with Mafia II Definitive Edition (Amazon Prime version not being recognized), but did NOT receive any manual additions / fixes to the game library or order history. At least not yet. But I will contact GOG support next week if this doesn't get sorted out.

You are definitely encouraged to do so, as I had checked with someone whom had redeemed Amazon Prime Gaming-derived codes for the second and third installment (but, they do not possess the first game in any form). On 2025-05-29 (according to their 'orders history'), without notification, they had indeed received the same normal version of Mafia II Definitive Edition.

I got it on 29 too. There was no e-mail or anything, even though I can see a receipt for "buying" it in orders history.

Perhaps the same thing will happen with other affected titles.

I have both Mafia 1 & 2 DE from Amazon and do not have 3. Non-Amazon version of Mafia 2 DE has appeared in my orders history on May, 29.

Thank you for drawing my attention to this. I was able just now to mark as owned the Mafia, Moto Racer, and Divinity Original Sin bundles.

Thanks for the hints! The Moto Racer bundle already was annoying me a lot as it's often on sale.

Is there a way to search for these kind of bundles or a list already collecting them?

I found out it also works with The Syberia Collection.

And I found out it also works with "Asterix & Obelix XXL Collection" and "The Agatha Christie Collection". :)

edit:

and with

"A Plague Tale Bundle",
"Maximum Entertainment Bundle",
"Metro Franchise Bundle",
"Shooter Dual Pack - Necromunda: Hired Gun + Space Hulk: Deathwing - Enhanced Edition"
"Warhammer 40K Bundle"

https://gamesieve.com/game-dynamic-pricing?group=false&okay_tag=nsfw

So, do we know what Amazon Prime games GOG will get in June 2025?

Thanks!