Question: Which board game was published first, Caylus or Titan?

full_context: Document 1: Mines of Titan: Mines of Titan is a single-player role-playing video game, developed by Westwood Associates (later Westwood Studios), and released by Infocom in 1989 for MS-DOS and Apple II.
Document 2: Heroscape: Heroscape (stylized as "heroScape" or "HeroScape") is an expandable turn-based miniature wargaming system originally manufactured by Milton Bradley Company, and later by Wizards of the Coast, both subsidiaries of Hasbro, Inc., and discontinued by Hasbro in November 2010. The game is played using pre-painted miniature figures on a board made from interlocking hexagonal tiles that allow for construction of a large variety of 3D playing boards. The game is often noted and lauded by fans for the relatively high production quality of the game materials, in particular the pre-painted miniature figures as well as its interchangeable and variable landscape system.
Document 3: Struggle for Rome (board game): 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.
Document 4: Catan Dice Game: Catan Dice Game is a German-style board game, developed by Klaus Teuber and published in 2007 by Catan GmbH and its licensors, Kosmos in Germany and Mayfair Games in English-speaking countries. It is a dice game re-imagining of Teuber's most notable title, "Settlers of Catan". "Catan Dice Game" can be played by any number of players, but is ideally suited for up to four. A variation, known as "Catan Dice Game Plus", is freely available from the "Catan" website, whose gameplay is closer to its "Settlers" origins.
Document 5: Keltis: Keltis is a board game designed by Reiner Knizia that won the Spiel des Jahres for best game of the year in 2008. In the US, it has been marketed as Lost Cities: The Board Game, though there are some subtle rules differences.
Document 6: The Boardgamer: The Boardgamer was a magazine founded by Bruce Monnin after Avalon Hill was bought out by Hasbro and the future of their board games was in doubt. The magazine was published between 1996 and 2004. The intention was to continue support for Avalon Hill products in the same way "The General" had, as well as (according to Monnin in issue 46 of "Operations Magazine"), any games contested at the World Boardgaming Championships.
Document 7: Caylus (disambiguation): Caylus is a 2005 board game by William Attia.
Document 8: Camel Up: Camel Up is a board game for two to eight players. It was designed by Steffen Bogen and illustrated by Dennis Lohausen, and published in 2014 by Pegasus Spiele. Players place bets on a camel race in the desert; the player who wins the most money is the winner of the game. "Camel Up" won the Spiel des Jahres in 2014.
Document 9: Carcassonne (board game): Carcassonne is a tile-based German-style board game for two to five players, designed by Klaus-Jürgen Wrede and published in 2000 by Hans im Glück in German and by Rio Grande Games (until 2012) and Z-Man Games (currently) in English. It received the Spiel des Jahres and the Deutscher Spiele Preis awards in 2001.
Document 10: Twilight Imperium: Twilight Imperium is a strategy board game produced by Fantasy Flight Games. It was designed by Christian T. Petersen and was first released in 1998. The game is in its third edition (2005), which has large changes over previous editions. This edition also has two expansions – "Shattered Empire" released in 2006, and "Shards of the Throne" released in 2011. It is known for the length of its gameplay (typically greater than 6 hours), and its in-depth strategy (including military, political, technological and trade).
Document 11: Titan (game): Titan is a fantasy board game for two to six players, designed by Jason B. McAllister and David A. Trampier. It was first published in 1980 by Gorgonstar, a small company created by the designers. Soon afterward, the rights were licensed to Avalon Hill, which made several minor revisions and published the game for many years. "Titan" went out of print in 1998, when Avalon Hill was sold and ceased operations. A new edition of "Titan", with artwork by Kurt Miller and Mike Doyle and produced by Canadian publisher Valley Games became available in late 2008. The Valley Games edition was adapted to the Apple iPad and released on December 21, 2011.
Document 12: Caylus: Caylus is a strategy oriented, German-style board game designed by William Attia and independently published in 2005 by Ystari in France and England, and Rio Grande Games in North America. "Caylus" has a mix of building, producing, planning, and bargaining — without direct conflict or dice-rolling mechanics.
Document 13: Tsuro: Tsuro is a tile-based board game designed by Tom McMurchie, originally published by WizKids and now published by Calliope Games.
Document 14: Terra Mystica: Terra Mystica is a German-style board game for two to five players designed by Helge Ostertag and Jens Drögemüller. The game was first published by Feuerland Spiele in Germany in 2012, and was later published in English and French by Zman Games and Filosofia Édition in 2013. Feuerland Spiele released a second German edition of the game in 2013.
Document 15: Stratego: Stratego is a strategy board game for two players on a board of 10×10 squares. Each player controls 40 pieces representing individual officer ranks in an army. The pieces have Napoleonic insignia. The objective of the game is to find and capture the opponent's "Flag", or to capture so many enemy pieces that the opponent cannot make any further moves. "Stratego" has simple enough rules for young children to play, but a depth of strategy that is also appealing to adults. The game is a slightly modified copy of an early 20th century French game named "L'Attaque". It has been in production in Europe since World War II and the United States since 1961. There are now 2- and 4-handed versions, versions with 10, 30 or 40 pieces per player, and boards with smaller sizes (number of spaces). There are also variant pieces and different rulesets.
ground_truth: Titan