A simple physics toy involving rolling coins and springy platforms. I can watch it for hours.. It uses a wonderful editor extension called Playmaker that lets you build state machines visually by browsing all of the many functions available through Unity scripting. It also uses a great extension called iTween to make the platforms shake like they are mounted on springs. Third party extensions are one of the greatest things about Unity.
You can manipulate the coins using the mouse - they turn into kinematic objects that affect the other coins.
The printout and buttons to the left of the game demonstrate two way communication between the Unity 3D game and the hosting web browser. The dollar count shows how many coins have fallen off the edge. The Reset count button will clear this value back to zero. the Switch Camera button will let you see behind the curtain, and the Toggle Sound button will let you mute the noises.