Each card presented a diverse puzzle, and even though they supplied extra story background, it was feasible to join the ARG without obtaining them.

Mind Candy announced that the first set of cards for the new game season, called Perplex City Stories, would be released on 1 March 2007.

Cards were marked with unique identifiers, which could then be entered onto the Perplex City website, earning points and a place on a leaderboard.

Many cards contained hidden features, such as ultraviolet or heat-sensitive inks, and they covered a broad range of themes, from pop-culture trivia to cryptography and logic brainteasers.

They are: Perplex City is a fictional extensive imaginary hub, with an unspecified number of ties to Earth and futuristic attributes that include state-of-the-art mobile technology, neuroenhancing drugs, and kilometer-high skyscrapers.

In the plot of the game, The Receda Cube artifact (pronounced [reh-kay-duh]), which the players are made to find, is a revered and consecrated object.

[12] The puzzle cards are intended as an introduction to the characters and story of Perplex City itself and the deeper mysteries of the cube theft.

Clues found on the cards direct players to various websites, blogs, emails, phone calls, and SMS messages originating from Perplex City.

Some examples of items that were achieved due to its longevity include: In late 2006, Mind Candy released Perplex City: The Board Game.

Players solve anagrams, logic problems, visual puzzles, and trivia questions to collect a set of colored stones.

The rules insert maintains an in-universe approach to Perplex City, giving background about its puzzle-loving citizens and a fictional history of the board game.

The Mind Candy cards were first released in select outlets around the world but are increasingly readily available from retailers both online and offline.

On September 7, 2006, Mind Candy announced that GameStop was to begin carrying Perplex City cards in 700 stores in the United States.