DBPro isn't VB, Delphi, C++...
Consider that these standards are taught in schools and colleges, have a lot of literature behind them - really code for these languages tends to be far neater than the average DBPro project. So it's one thing for several Delphi programmers to work on one project, because it's far more conceivable for them to concentrate on different functions and areas.
With DBPro, you have no set standard, no taught standard, everyones code is quite unique and understanding another's DBPro code at the level required is very difficult. So an open source DBPro project needs a lot of care and attention, far more so than a solo project.
For things like this to work, you need some serious planning. For instance media, you let every Tom, Dick, and Harry add their media to the mix and the game ends up looking shoddy as hell. Media has to match, if you have a jeep and a tank, it's no good if the jeep has had hours of painstaking work on the texture, and the tank has been box mapped with a low quality JPG photo of a toy tank. People need to find and stick to roles, but they never do. If someone contributes beautifully textured jeep model, grab them, chain them to a radiator (near a PC with copy of Photoshop of course), and force them to make or redo every military vehicle texture. Really you need a good 2 or 3 texture artists (hardware, environment, characters). As for the idea of open source, well I went through all my thoughts on that the last time, jist being that it just doesn't work like in other platforms.
''Stick that in your text and scroll it!.''