This is an interesting article on game design. It centers on the core mechanic (action) of the game. Jumping, Shooting, and so on. I think it presents an interesting possiblity for thinking about a game for learning. What is the main action focus for the learning? What do you want the learners to do as a result of the learning. How might that be represented in the game? Directly? in some metaphorical way?
What are your thoughts about the article and its possible use as one framework for learning design?
Designing around a Core Mechanic via Funstormgames.com