Can I use Demo Scenes in Commercial game?

Hey had a question about Demo Scenes. Can I use them in my commercial game? Not a whole level copied… just parts of it to add onto my own level? Change it up a bit with the same layout.,Hey had a question about Demo Scenes. Can I use them in my commercial game? Not a hole level copied… just parts of it to add onto my own level? Change it up a bit with the same layout.

It depends on the publisher so you can contact publisher asking if he is ok with releasing a commercial game with his design.