Listed here are my documents which I put together a looong time ago. It should give you a good idea of what to expect from the final version. I went from the original ascii base to allegro...but Allegro doesn't really work to well in Windows XP, so I switched to OpenGL. Now that I'm getting the hang of that, expect some good stuff to make its way into the game.

The gameplay however is exactly as specified in the documents. These documents are presented in the original TXT format.

Original Brainstorming
Requirements Elicitation
Requirements Analysis
System Design Documents

Finally, for those of you interested in the current progress of the documentation above, I have a versions document.

Versions Document