John Madden missed out on much money in video game decision
Graphical Evolution of Madden NFL (1988-2018)
25 years of Madden, the video game that changed football forever - The Verge
MADDEN NFL evolution [1988 - 2022]
John Madden Football (Video Game 1988) - IMDb
John Madden Football (1990 video game) - Wikipedia
Re: John Madden Returns to the Cover of EA SPORTS Madden NFL 23 - Answer HQ
A Comprehensive Guide to Pro Football Video Game Covers : r/nfl
Pick-Six: Best 'Madden NFL' releases of all time – The Swing of Things
Madden NFL 19: The weird story behind the first 'John Madden Football' game