Duke Nukem 3D Raze - LOADS of Shovelware Maps
People using Raze to run Duke Nukem 3D don't have to have any shortage of extra maps. There are thousands of maps out there for you to try. They may not be full conversions, but who really cares? They run very reliably on Raze, and you can download them for free. Enjoy! There are a lot of helpful links down below:
List of Duke nukem shovelware packs:
MSDN modern maps - 71:
https://dukeworld.com/2001-current/maps/packs/msdnmodernmappack.zip
MSDN old map pack - 28:
https://dukeworld.com/2001-current/maps/packs/MSDNOldMapPack.zip
Duke3D 1400 maps:
https://www.moddb.com/games/duke-nukem-3d/addons/duke-nukem-1400-map-collection
Duke Assault 1500 levels:
https://www.moddb.com/games/duke-nukem-3d/addons/duke-assault
Duke Xtreme 50 maps:
https://www.moddb.com/games/duke-nukem-3d/addons/duke-xtreme
Duke3D Maps - 360 Collection:
https://archive.org/download/duke-3d-maps-1/Duke3d Maps-1.zip
Nuke It 1000 - 1000 Maps:
https://www.moddb.com/games/duke-nukem-3d-20th-anniversary-world-tour/addons/nuke-it-1000