I still find that funny that some think you can't finish a game. How about the driving simulator. A huge game with a c-script physic engine.

My personal opinion, is that 3dgs is ideal for the 3d casual game market. Two examples of this are my own Tower and Xcube 2. With some scripting knwoledge, and following a modeling tutorial or two, a single person can put together one of these games fairly quickly.