In 1974, Dino de Laurentiis produced an unofficial remake titled, Unbelievable Adventures of Italians in Russia.

The first videotape version of the film was made using the 154-minute 35mm negative. In the '90s, footage from an old 70mm print was restored to the film, bringing the running time up to 186 minutes. Most of the remaining six minutes is now believed lost. Kramer considers the 154-minute version the only official one.

It's a Mad Mad Mad Mad World enjoys a fervent cult following today and "The Mad World Committee" continues to campaign for the restoration of the 70mm version and the return of the missing footage from that version.

The 1991 television documentary Something a Little Less Serious: A Tribute to 'It's a Mad Mad Mad Mad World' brought together Kramer with cast members Edie Adams, Milton Berle, Sid Caesar, Norman Fell, Buddy Hackett, Marvin Kaplan, Jerry Lewis, Carl Reiner, Mickey Rooney, Arnold Stang and Jonathan Winters. The hour-long program is also included on the film's DVD.

It's a Mad Mad Mad Mad World has inspired episodes of The Simpsons, Charmed and The Suite Life of Zack and Cody and been spoofed in the low-budget horror film Dead End (1986).

by Frank Miller