The Truth About Marika (Swedish title: Sanningen om Marika), is a transmedia production by Sveriges Television (SVT) and The company P in cooperation with SICS and Interactive Institute. It is an alternate reality game and a TV-series, created by Anders Weidemann, Martin Ericsson and Daniel Lägersten. The drama series, written by Anders Weidemann, first aired in Sweden during the autumn of 2007. The Truth About Marika was marketed as a "participation drama" and had a high amount of viewer participation.
The viewers of the TV-series were invited by a young woman to participate in the search for her lost friend and the search took place online and all over Sweden.