Today I spent about 2 hours making this simple game. I just followed the chapter 2 on a book, "The complete Guide to Torque X for XNA."I found that TorqueX is a very easy and fast game developing engine. Although I don't think we can use it for commercial game development, it seemed good for personal use.
I'm still reading the book, and I expect to see some interesting functionality for 3D part on latter chapters.