Perplex City

Description
''A city obsessed with puzzles and ciphers. A game that blurs the boundaries between fiction and reality.''

''Begin an incredible, immersive adventure that spills out into the real world. Interrogate suspects over the phone, search police files for evidence, decipher coded emails and check newspapers for clues - working with tens of thousands of players around the world.''

Perplex City itself was the story of an alternate universe that was actually quite similar to our own. They had an precious artifact known as the Receda Cube, which had been stolen. The role of players was to become familiar with Perplex City culture, which was based on mental agility (whereas Earth would be physical), and eventually find the Cube.

Extra Notes

 * The game had a final prize of 100.000 British pounds for whoever found the Receda cube. This was accomplished by Andy Darley (aka Rand0m of the Unfiction forums).
 * Accompanying the game there was a card game released with a puzzle in each card. Players could solve the puzzle in each card and submit in the website. This would give them points and place them in a leaderboard.
 * There 2 cards which remain unsolved until today. One of them has a mathematical equation and is pretty much impossible to solve. This one is number 238 - Reimann.
 * The other card is number 256 - Billion to One. This card led to a hunt for a man called Satoshi by the players to the point of them creating a webpage for it - http://www.billion2one.org (now offline) - Wayback Machine archive
 * There was suppose to be a second season entitled Perplex City Stories but it was suspended back in June 2007



Other Resources

 * Unforum
 * Perplex City Explodes into Play: Introduces New Concept, Controversy (ARG Net)
 * Project Syzygy Announced (ARG Net)
 * JayisGames
 * Wikipedia article