At the risk of sounding pedantic, I feel compelled to correct this minor incorrect jargon. Xnalara is a posing and rendering software popular on Deviantart (and basically nowhere else lol), so if you're downloading game model rips off there, they'll likely be in that weird proprietary xnalara format and require another conversion step to get it into real 3D software. But the game files themselves are not native to that format and ripping models directly from Unreal Engine titles is relatively easy, since the format is the same for all UE games and the tools have existed for years. I have basically every named character from VII-R ripped and saved in a standard, useable-in-any-3D-software FBX format, so I can 3D print things here and there.