This challenge consisted of several rounds...

First Round - each player has one game on each machines. The games were Addams Family, Revenge From Mars and The Flintstones. All machines played in 'tournament mode' & points were allocated as follows :

POINTS	ADDAMS	REVENGE	FLINTSTONES
5	500,000,000+	500,000,000+	1,250,000,000+
4	400,000,000+	400,000,000+	1,000,000,000+
3	300,000,000+	300,000,000+	750,000,000+
2	200,000,000+	200,000,000+	500,000,000+
1	100,000,000+	100,000,000+	250,000,000+
0	less than 100,000,000	less than 100,000,000	less than 250,000,000