Super Bowl XXIV coaches; rookie head coach George Seifert took over after Bill Walsh retired following the previous season's Super Bowl. The 49ers finished the 1989 regular season with a league best 14–2 record. The Broncos, who posted an 11–5 regular season record, entered the Super Bowl looking to avoid tying the Minnesota Vikings with four Super Bowl losses as well as the Vikings record of losing three Super Bowls in four years. This game remains the most lopsided game in Super Bowl history. San Francisco's 55 points were the most ever scored by one team, and their 45-point margin of victory was
Super Mario Bros.: The Lost Levels Bros." game before it was released in Japan as a standalone game as part of a collaboration with Fuji Television. Miyamoto spent more time on "Doki Doki Panic" than on "The Lost Levels". "Doki Doki Panic"s characters and artwork were modified to match "Super Mario Bros." before being released in America, and the re-skinned release became known as the "big aberration" in the "Super Mario" series. The American "Super Mario Bros. 2" was later released in Japan as "Super Mario USA". Nintendo "cleaned up" parts of the Japanese "Super Mario Bros. 2" and released it in later "Super Mario" collections