Just as interesting as the Quake engine itself are the Quake Tools [1]. The level editor, QuakeEd, was written in Objective-C for the NeXT operating system (whi

Just as interesting as the Quake engine itself are the Quake Tools [1]. The level editor, QuakeEd, was written in Objective-C for the NeXT operating system (which would become Mac OS X). [1] https://github.com/id-Software/Quake-Tools https://github.com/id-Software/Quake-Tools