I just wanted to know if you could make your own levels using the Build Editor for Duke Nukem 3D. I'm not sure if this game has its own specific editor, or you just have to import the resources etc. And while I'm at it, I am curious about making levels for Shadow Warrior as well (man, I wish that was on GOG).

Thanks for any help!

Blood maps have some encryption and Mapedit only exports to the encrypted Blood map type; so unfortunately, you can't make maps for DukeNukem or Shadow Warrior with it. There are some third party map editors that can make maps for both DN & SW but I don't believe they have full Blood map support yet. You can look into one of the Build engine projects like eDuke32. I think they were working on adding in Blood map support, or a map converter based on the Blud2b map converter.

I just started playing Shadow Warrior again. It's a fun game but not as good as Blood or Duke 3D. The soundtrack kicks ass, though.