https://dukenukem.fandom.com/wiki/Duke_Nukem_3D_Level_Design_Handbook https://dukenukem.fandom.com/wiki/Duke_Nukem_3D_Level_Design... I think this perhaps to b

https://dukenukem.fandom.com/wiki/Duke_Nukem_3D_Level_Design_Handbook https://dukenukem.fandom.com/wiki/Duke_Nukem_3D_Level_Design... I think this perhaps to be the one?