The original format broadcast between 2000 and 2003 was known as Vem vill bli miljonär?

The main goal is to win 1 million SEK by answering 15 multiple-choice questions correctly.

Lifelines may be used by the contestant on any question, which are Fifty Fifty (50:50 – femtio-femtio), Phone-A-Friend (ring en vän), Ask The Star (fråga stjärnorna), and Switch the Question (byta fråga).

During Phone-A-Friend, the contestant and the called person are given 30 seconds to discuss the question.

If the contestant decides not to answer the question, the game ends, and the contestant walks away with the money value of the most recently cleared level and is instead asked to guess the correct answer to the question.

Occasionally, special episodes are aired where the show invites pairs of Swedish celebrities who play together.

As of 16 February 2025, there have been 15 top prize winners in Postkodmiljonären: Per Hörberg,[3] Torgny Segerstedt,[4] Olle Laurell,[5] Jan Sundström,[6] Mattias Österman,[7] Lena Anviken,[8] Birgitta Hedström,[9] the pair Lena Ag and Alexandra Pascalidou, Ylva Orrmell, Marianne Hiller, Ulf Jensen,[10] Eric Forsyth,[11] Jonas von Essen[12] Wilmer Bach-Lundin,[13] and Simon Alling.