Okay. Little more than that. For everyone confused think of this as the developer's primary folder for everything related to MAKING the game. Blender files everywhere, a project folder with only LINUX folders under binaries, very interesting. But the file size is massive because it's the raw data for each and every character in the game, all their blend files, too many quite frankly but I can learn from it so no complaints here, and I will try to re-open an Unreal Project from the project folder in this link, I didn't see any .uproject files in there so I doubt it. At the very least as someone asked above, YES. THIS IS THE STUFF YOU NEED TO MAKE YOUR OWN THING. Game/Video/App whatever. In fact, Unreal Engine REALLY likes the way this developer has everything set up -- you want textures and diffuse/normal/rough or whatever entirely separate from the mesh (as opposed to a blend file without a separate set of textures, good luck getting that into Unreal). You remake all of your textures as 'materials' in Unreal then apply them where appropriate. Still a little tedious but it, well, actually works. I'll look through the whole set of data later but thank you so much for posting this!
~pajamapanda