Elevator Saga: The Elevator Programming Game

This is a great example of teaching coding by making a game out of it. I think maybe a hint function might improve the over all experience but still very nice....

I would like to suggest a traffic light control game with pedestrian and vehicle calls for the next game, avoiding grid lock between multiple intersections is a problem that still plagues traffic engineering departments, especially with pedestrians as people do weird things like go halfway across the road then turn around and walk back. Railways and emergency vehicles also cause troubles.