Those reading the PlayBasic development blogs on our forums, would no doubt recall the mention of the wanting to combine the various software 3D rendering routines into a bit of 3D library for PlayBasic V1.64 users. The objective of the library, is to allow the users to create 3D scenes quickly and easily. However, given this is software rendering (affine / with no perspective correction or Z buffering), the purpose of the library is not to create 3d games with, more to augment your existing 2D applications with some 3D effects.
This is a video of version V0.01 of library, which at that point only supported textured terrain and simple cube objects. More recent editions of the library support loading Animated MD2 objects which can be seen in the screen shots bellow.
As you can see even though the library is using software 3d, you'll still be able to have some fun with it, and more importantly start learning about 3D programming.