@JSG
It's good to be optimistic, but I suggest you look around this board first, look at the games that are here, and try to imagine you made them - at your experience level, you couldn't, not being nasty, but noone could at your experience level. Now, look at these games again and ask yourself if you would buy them for $30.. would you?
If not, then atleast understand that a game such as this will not be sold for half as much, or a 100th as much.
As I said, have fun coding.
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Dude.. I just tried the 3D version, there's no difference, apart from you can choose who you hire, and then it has a random cube showing up..... I mean.. lol.
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Here are some tutorials to get you started:
Monster Hunt (Comes with DBC)
http://developer.thegamecreators.com/?f=t01/3d_tutorial_index
Binary Moon (Remake the awesome game limit rush (I recommend this one))
http://developer.thegamecreators.com/?f=t02/bm_tutorial_index
And here is the codebase sorted for DB Classic, look through those carefully and you will learn alot.
http://developer.thegamecreators.com/?m=codebase_list&c=&l=1&p=&a=
There. I hope next time I see a demo it will have some potential.