So I have a little problem with the Unreal series. Basically every game except the base Unreal Gold and Unreal 2 I cannot access the store page.

If I enter them in the search, they don't show up, but they are with the "Buy the rest of the series" section of the store pages of the above games.

If I click them they just take me to the overview (gog.com/games).
If I add them directly to the cart, it gives me nothing in the cart.
Is this a regional thing?

I'd quite like to get UT 2004 during the sale, but apparently someone doesn't want to sell to me

Thank you for the answer. I was afraid it would be something like that.

Remember guys, it's not censorship, it's protection of minors ;-)
Think of all the countless children that would've been severely harmed by gruesome games like these. I'm soooo glad that I live in the ONLY democracy in the world that takes care of their precious children*. Man, those kids in our neighbor countries must be constantly traumatized from everything.

(* well, there's all these cases where kids died because the youth welfare service didn't do their job, but at least they weren't harmed by media... I guess)