Thanks for your reply.

What you say sounds convincing - people who are able to use a 3D-engine should do this I think.

At all, Andorra 2D supports displaying 3D-models. The only thing that can not be made "3D" is the sprite engine.

I just liked to make a 2D-Engine (for me this means that images can be drawn on any desired position with one command) because for many people this is more simple than using a 3D library.