GOG Database (which lists every game that's ever been sold here, regardless of whether it's currently for sale) doesn't show anything called "Adventure Park". Same with Turok: Escape from Lost Valley (which I'd never heard of before just now, and I almost certainly would've if it had been here). So for those two, at the very least, you're confused as to where you bought them. It wasn't here.

Not mention Unreal Tournament 3 was never sold here.

LOL, I didn't even notice that one.

Don't waste your time with this guy.
Allegedly "Spec Ops: The Line" and "JYDGE" were removed from his account.

He failed to deliver any evidence that he ever LEGALLY owned said games.
HERE on GOG.
On THIS account.

When offered the most likely possible explanations, as to why he may be missing the games on this account (bought on a key-reseller site and therefore key revoked, NOT bought here on GOG, but somewhere else and now misremembering that little fact, bought here on GOG, but on an alt-account, etc), he disappered...only to reappear in this thread, repeating the same allegations: https://www.gog.com/forum/general/ok_what_is_fcking_going_on_with_gog_support/post20

It is better for all parties involved if you just pirate the game instead of buying it at a grey market seller. The only people who benefits from a grey market seller is the seller itself and the scammers.

You are gambling that the keys are OK, Developers / publishers sees no benefit from them (arguably they have a loss), and gOg do have a direct loss from each sale.

This is not only me saying this, but game developers - https://www.pcgamer.com/developers-tell-people-to-pirate-their-games-instead-of-using-g2a/

It's best for forum members to remember CoC 2.14 and not promote certain activity. Some developers may indeed have said things in support of said behaviour, but it's in no way guaranteed to be indicative of the mindset of all game developers nor all game publishers.

In short, best not promote this alternative and focus on just dissuading the purchase of games on grey market key reseller sites.

I am not promoting piracy. Just as saying it is better to be punched in the stomach than shot in the head does not mean I endorse punching people, my statement should not be construed as support for piracy.