Add animals or something and a sea and i think it will be better if you need to drag the camera instead of just moving the mouse. Add a button that makes you stop on the spot because it takes a few seconds to stop after you run for while. Add weather that changes and if you do add a sea (or a lake or something...) make it that we can dive under water.
 "No Time To Explain"){kind=icon}
 "My Mini World"){kind=icon}
 "The Nokkians 2"){kind=icon}
 "Punk-o-matic 2"){kind=icon}