NFL Gameday 99 Download - GameFabrique
NFL Gameday 99 - Playstation (PSX/PS1) iso download
NFL GameDay 2001 - PS2 Gameplay (4K60fps)
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PlayStation - NFL GameDay 99 (1998)
Playstation Classics: Jampack, Winter 1998 (Demo Disc)
The History of Football Games - GameSpot
List of PlayStation games (M–Z) - Wikipedia
The History of Football Games - GameSpot
Madden NFL 99 - - PlayStation Collector's Site