Backbone is a cool little program, I made two games in it Anoic (a sonic rip off) and Under Cover (a another world rip off) both are on aminet (
http://aminet.net/package/game/misc/amigang )
http://www.youtube.com/watch?v=y1MLqaKu8mIquite pleased with Under Cover I always wanted to finish it off but didn't have the backbone key files at the time, I since got them, but when I did finally go back to it to try and finish it off I kept getting errors, shame really.
So i instead started another game called Trevor and Trolls :laugh1: about one guys mission to make a new Amiga but have to avoid the trolls along the way to get it made. I know a mad but fun idea I just had one (of my increasingly) rare free evening working on it, I've upload a vid of how far I got.
http://www.youtube.com/watch?v=HNZVShFNU5YI might one day go back to backbone as I would love to remake my under cover game, but I'm currently trying to learn Hollywood better so I can make more advance stuff in that, thats where most of my Amiga free time is on now. (just released amipad 3!) but best of luck to you.