John Madden Football '92 (Sega Genesis, 1991) for sale online
John Madden Football II (1991) - MobyGames
John Madden Football (1989) - MobyGames
John Madden Football '92 (1991) - MobyGames
John Madden Duo CD Football (1993) - MobyGames
List of Madden titles, Madden Wiki
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John Madden Football II (1991) - MobyGames
John Madden Football (1990) - MobyGames
John Madden Football '93 (1992) - MobyGames
John Madden Football (1989) - MobyGames
John Madden Football (1990) - MobyGames
John Madden Football (1989) - MobyGames
Madden NFL '96 Windows, PS1, SNES game - Mod DB
Madden Series – WATA Games