Fun - Set Up A Great Course With The 200 Dominoes And Numerous Accessories. Start The "Run" With The Marble Run. Obstacles - One Of The Marbles Rolls Down The Marble Run And Pushes The First Stone. The Stones Handle Many Hurdles To Reach The Destination. Tricks – In The Funnel, A Marble Is Bumped, Which Encounters The Next Stones Of The Course Through A Hole In Ever Smaller Circles