Great, thanks for the answers!
Raises a few more questions, though:
There is a UT marketplace, different from the UE market place? (Not a legal question, just asking)
The second point is… well, it will kill all map collecting sites, wouldn’t it? Sad thing, as those were the pillars of the really great mapmaking community back for UT2k4. They had great competitions among them (with stunning results, Halloween packs anyone?) and some are alive even today.
And finally:
In the Terms and Conditions of the Marketplace (https://www.unrealengine.com/marketplace/marketplace-business-terms-faq) it says:
So, as I understand it, it should be no problem to use content from the Marketplace in other games. Or am I mistaken?
The one problem I see is the standalone creative work:
A map for UT is no standalone work, or is it? I don’t know how lawyers define standalone, but you need UT to run an UT map, so I wouldn’t consider it standalone. Does that mean that you can never use UE marketplace content to make UT maps?
The other problem I see with this:
Let’s assume that lawyers think an UT map is a standalone product. Now I made the map not with UT content (which would be easy, as this seems to be allowed anyways) but with a pack from the UE marketplace (not UT) - and mostly with assets from that pack. Not exclusively, but mostly. Would I then be able to still offer that map in the UT marketplace (skip all third party sites or other games here)? Or does “in which content is merely a component and not the primary focus” apply here and forbid this?
I think this is something that could very easily happen - someone sees a content pack on the UE marketplace, has a great idea for an UT map based on this, makes the map, puts it on the UT marketplace - and then goes to jail or pays fines for the rest of his life?