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This was john madden first invention this game was based on the 1988 season
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This was his second invention this game was based on the 1990 season.
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This was john madden third invention and this was based on the 1994 season
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This was john madden fourth invention and this was based on the 1995 season
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This was the fifth invention his mind was exploring graphics in many ways, this was based off 1999 season
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This was his sixth invention he started to drop madden heavily this was also was based on the 2000 season
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In the 2000's technology was getting better this was based on the 2001 season