The Magnificent Race (Palitoy) - Andy Merritt's House Rules
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1) 1/2 Price Advantage squares are too powerful.  Landing on
   them only allows 1 advantage card to be bought.

2) Once the advantage cards have all gone money is essentially
   useless, which makes most of the spaces on the board
   pointless, therefore allow the following to keep money
   useful.

   In any Race a player may pay a fee of 10000 to add in an
   extra ball.  This may be done several times in the same
   race, but there is always a maximum of 5 balls.