Question: Which game was produced first, Guess Who? or Catan?

Context articles: Candamir: The First Settlers
Carcassonne (video game)
Elasund
Struggle for Rome (board game)
Catan
Settlers of America: Trails to Rails
Guess Who?
Catan (2007 video game)
The Settlers of Catan (novel)
Starfarers of Catan

Candamir: The First Settlers is a German board game.
 It is the first game of the "Catan Adventure" series of games, which share a common theme (but not mechanics) with the "Settlers of Catan" games.
 As such, it was created by Klaus Teuber, and distributed by Kosmos in German and Mayfair Games in English.
 The name "Candamir" comes from the "Settlers of Catan" novel by Rebecca Gablé, where Candamir is the name of the main character.
 The same character is prominently featured in this game.
Carcassonne is a turn-based strategy video game, based upon the board game of the same name designed by Klaus-Jürgen Wrede for the Xbox 360, developed by Sierra Studios, and Windows Phone, developed by Exozet Games.
 The Xbox 360 game was released on June 27, 2007, and is the second designer board game to be released on Xbox Live Arcade, the first being "Catan".
 The Windows Phone version was released on October 24, 2012.
 There is also a version for iOS operating system devices.
Elasund: The First City (German: "Elasund - Die erste Stadt" ; ] ) is a German-style board game designed by Klaus Teuber.
 It is the second game in the "Catan Adventures" series (the first being ""), a series of spinoff games based on the theme from Teuber's hit game "The Settlers of Catan" as well as its German-language novelization by Rebecca Gablé.
 As a game in the "Catan" series, it is published by Kosmos in German and Mayfair Games in English.
 Despite the thematic connection between "Elasund" and "Settlers", the two games have completely different mechanics.
Catan Histories: Struggle for Rome is a 2006 German-style board game based on the game mechanics of "Settlers of Catan", depicting the fall of the Western Roman Empire.
 The game is created by Klaus Teuber, the creator of "Settlers", and is published under license from Catan GmbH by Kosmos in German and Mayfair Games in English.
 It is the second game in the "Catan Histories" series of board games.
 Often games produced in different languages by different publishers have slight rule differences between the versions.
 Catan Histories: Struggle for Rome is no exception.
The Settlers of Catan, sometimes shortened to Catan or Settlers, is a multiplayer board game designed by Klaus Teuber and first published in 1995 in Germany by Franckh-Kosmos Verlag (Kosmos) as Die Siedler von Catan.
 Players assume the roles of settlers, each attempting to build and develop holdings while trading and acquiring resources.
 Players are awarded points as their settlements grow; the first to reach a set number of points, typically 10, is the winner.
 The game and its many expansions are also published by Mayfair Games, Filosofia, Capcom, 999 Games, Κάισσα, and Devir.
Settlers of America: Trails to Rails is a 2010 German style board game created by Klaus Teuber and distributed by Mayfair Games.
 It is the first "Settlers of Catan"-series game to be distributed exclusively in the English language, and the third game in the "Catan Histories" line of games, which adapts the "Settlers of Catan" game mechanics to various historical contexts.
Guess Who?
 is a two-player character guessing game created by Ora and Theo Coster, also known as Theora Design, that was first manufactured by Milton Bradley, in 1979, now owned by Hasbro.
 It was first brought to the UK by Jack Barr Sr in 1982.
Catan was the Xbox Live Arcade version of Klaus Teuber's "The Settlers of Catan", developed by Big Huge Games in collaboration with Teuber.
 It was released on May 2, 2007.
 It is the first German-style board game to be released on Xbox Live Arcade, which was followed by "Carcassonne".
The Settlers of Catan by Rebecca Gable is a historical fiction novel based on Klaus Teuber’s popular board game Catan.
 The novel was first released in Germany in 2003 and was translated to English in 2011.
Starfarers of Catan is a multiplayer board game loosely based on the "Settlers of Catan" series of games.
 It was created by Klaus Teuber as an official spin-off and is distributed by Kosmos in German and Mayfair Games in English.
 First released in 1999 for three to four players, Kosmos and Mayfair released an expansion in 2001 to allow up to two additional players.