Yea I am actually interested in trying to develop a game on the Build Engine and integrate it with other features.... lol......basically make a new engine from the oldest engine? Yes.....the sky is the limits eh? EVEN WITH 2D! 
Here is a source code page for the Build Engine if anyone is interested:
Ken Silverman's Build Engine Source Code Page http://advsys.net/ken/buildsrc/
the "latest" and "greatest" build engine port:
"The best Windows & Linux port of KenBuild, the Build Editor, Duke Nukem 3D, and Shadow Warrior by Jonathon Fowler. His port uses DirectX natively, and supports full OpenGL rendering using my "Polymost" technology."
http://www.jonof.id.au/jfbuild
"For those interested in hard-to-find Build Engine game related information, RTCM is the place to go."
http://www.r-t-c-m.com/
Here is a source code page for the Build Engine if anyone is interested:
Ken Silverman's Build Engine Source Code Page http://advsys.net/ken/buildsrc/
the "latest" and "greatest" build engine port:
"The best Windows & Linux port of KenBuild, the Build Editor, Duke Nukem 3D, and Shadow Warrior by Jonathon Fowler. His port uses DirectX natively, and supports full OpenGL rendering using my "Polymost" technology."
http://www.jonof.id.au/jfbuild
"For those interested in hard-to-find Build Engine game related information, RTCM is the place to go."
http://www.r-t-c-m.com/
