Sorry for bumping up this thread again!

I think this engine is worth a second and third look.

It is easy to use - with the examples written in Lua you can get fast results in very few time.

It is still quite basic, but it is very well organized and lucid.

And, most important:
"The Engine has been tested on Windows, Mac and iPhone, and can be virtually used on every platform."

I know, I should learn to use the mighty Unity, but I have almost no time, while working with 3DGS. So this little engine is sort of a toy, because it starts immediately, I don't have to wait for loading any asset sets, and can start right on.