The Lost Experience is an alternate reality game (ARG) designed by the writers and producers of Lost to engage fans and expand the storyline. The game was co-developed by three TV companies, America's ABC, Australia's Seven Network and the United Kingdom's Channel 4. On 24 April, the networks announced that the game would begin in the first week of May. This article is a timeline of the various clues related to The Lost Experience based on the U.S. dates the clues were discovered. Each date on the calendar links to detailed information about the clues discovered on the corresponding date.