Hi Josh,
the LEADWERKS Engine?

WOW!
... and as I just have looked up, this engine isn't that expensive,
your company's website sais US$ 150,- for the engine and US$ 120,- for the WorldBuilder, is this correct?
... and the WorldBuilder is capable of CSG?
darn, I guess you have me, I'm an old POV scripter and I always disliked too much Meshes... xD
from your product information:
> DLL version can be used with virtually any programming language.
PureBasic can access external DLLs without problems
> Procedural interface allows full access to all features while maintaining a simple and straightforward API.
PureBasic can natively handle API calls with 32bit arguments, 64bit argument API calls have to be imported.
this should not be too difficult, myself I have not much experience with imports, but I know others who have.
the C Header maybe helpful to create the importing code in PureBasic.
PureBasic is an European Product, international sold.
how easy is international shipping of your engine's package?
the billing pages offer CreditCard and PayPal... are there other possibilities, too?
excuse my questions, just curious...
how did you find PureBasic and this forums?
oh... and have a nice day.