DVD-R Homebrew??

Has anyone managed a playable DVD-R with anything OTHER THAN a straight copy of a commercial game? (naughty, naughty)
I tried to burn a DVD-R "pgen" a couple of times with no luck, and gave up for now, cause DVD-R makes for some lavishly expensive coasters, if that's all I can possibly get for my effort. I use the Sony CDVDgenerator, and it has a DVD project mode, what the hell is it for, if none of them work??
Copies of games are a waste of time, I never actually play games on mine anymore, I have way too much fun just trying to see what I can do that's if not completely original, at least not an iso, or a bin, the MASTER DISC is my thing, the one of a kind compilatiions, that are actually originals, since there was nothing to "copy" in the first place. Isnt there some LEGAL use for my DVD writer?

Cd dvdgen does work ok ... I think Pgen and some other emulators only have access when the drive is in CD mode this to do with the drivers Pgen uses.

It is to do with the drivers with Pgen (Me thinks)

:)