Three player game, each player playing a different copy of Buttons and Lights.  Each copy of Buttons and Lights has three buttons and three lights.  The first button toggles the first light.  The second button interchanges first and second lights.  The third button interchanges the second and third lights.  All lights initially off.  The goal is to get them all on.  A game terminates when all three lights are on or after 6 steps, whichever comes first.  The overall game terminates when at least one of the three subgames is over.  100 points for successful completion; 0 points otherwise.