Colt Express is a railway-themed family board game designed by Christophe Raimbault, Illustrated by Ian Parovel and Jordi Valbuena, published in 2014 by Ludonaute and distributed by Asmodee.
Castle Ravenloft Board Game is a 2010 board game published by Wizards of the Coast.
 It was the first game released in the Dungeons & Dragons Adventure System board game series.
Alhambra (German: Der Palast von Alhambra , literally "The Palace of the Alhambra") is a 2003 tile-based German-style board game designed by Dirk Henn.
 It was originally published in Germany by Queen Games in a language-interdependent version; an English-specific version was released in North America by the now-defunct Überplay.
 The game is an Arabian-themed update, set during the construction of the Alhambra palace in 14th century Granada, of the 1998 stock trading board game "Stimmt So!"
, which in turn was an update of the 1992 mafia influence board game "Al Capone"; the original version was subsequently released as "".
Pasang is a two-player abstract strategy board game from Brunei.
 The game is often referred to as Pasang Emas which is actually a software implementation of the traditional board game.
 The object of this game is to acquire the most points by capturing black and white tokens on the board.
 Black tokens are worth 1 point, and white tokens are worth 2 points.
 The board is initially laid out with all 120 black and white tokens in one of over 30 traditional patterns.
 Players choose a piece called a "ka" which is used to capture the tokens on the board.
 Each player's "ka" moves around the board capturing as many tokens as possible.
 As a note, the "kas" are the only mobile pieces in the game.
 The other pieces are stationary, and are captured by the "kas".
 Players must capture token(s) during their turn, or lose the game.
 When all tokens have been captured from the board, the player with the most points is the winner.
 However, if there are any tokens left on the board, and none can be captured on a player's turn, then that player loses the game, and the other player is the winner.
Francis Tresham is a United Kingdom-based board game designer who has been producing board games since the early 1970s.
 Tresham founded and ran games company Hartland Trefoil (founded 1971), a company well known for its "Civilization" board game, until its sale to MicroProse in 1997.
 His "1829" game was the first of the "18xx" board game series and some of his board games have inspired Sid Meier computer games such as "Railroad Tycoon".
Steel Gunner (スティールガンナー , Sutīru Gannā ) is a first-person shooter arcade game that was released by Namco in 1990; it runs on Namco System 2 hardware, and was the second game from the company to utilize lightguns (the first was "Golly!
 Ghost!
", which was released earlier in 1990 and it was also their fourth game to allow scores not ending in "0").
 A sequel, Steel Gunner 2, was released in 1991 and the US version of it was also the second game from the company to feature the Federal Bureau of Investigation's "Winners Don't Use Drugs" screen in the attract sequence (the first was "Tank Force", which was released earlier in 1991) - and it would later go on to feature in five more US-released Namco titles.
Obsession is a board game released in 1977 for two players in which the player wins by moving their ten rings along numbered slots.
 They must get all ten rings into the "safety zone" before their opponent.
 Each player rolls a pair of dice, and can choose either to move their own rings up, or their opponent's rings down.
Awithlaknannai Mosona is a two-player strategy board game from the Zuni Native American Indian tribe of New Mexico, United States.
 It is unknown how old the game is.
 The game was described by Stewart Culin in his book "Games of the North American Indians Volume 2: Games of Skill" (1907).
 In this book, it was named Awithlaknan Mosona.
 Awithlaknannai Mosona resembles another Zuni board game called Kolowis Awithlaknannai (Fighting Serpents) with few minor differences.
 The former having a smaller board, and depending upon the variant, it also has less lines joining the intersection points.
 The rules are the same.
 Awithlaknannai Mosona belongs to the draughts and Alquerque family of games as pieces hop over one another when capturing.
 It is actually more related to Alquerque, since the board is made up of intersection points and lines connecting them.
 It is thought that the Spanish had brought Alquerque to the American Southwest, and Awithlaknannai Mosona may have been an evolution from Alquerque.
 However, in Stewart Culin's 1907 book, the Zunis claim that they had adopted a hunt game from Mexico similar to Catch the Hare and the Fox games of Europe, and transformed it into Awithlaknannai Mosona.
 In these games, one player has more pieces over the other, however, the other player's piece has more powers.
 The Zuni's equalized the numbers of pieces and their powers, and also may have transformed the board making its length far exceed its width.
 Diagonal lines also replaced orthogonal lines altogether.
 However, the hunt game from Mexico may have used an Alquerque board even though the game mechanics of their new game, Awithlaknannai Mosona, were completely different.
Sher-bakar is a two-player abstract strategy board game from Punjab, India.
 It is a hunt game.
 It uses an Alquerque board, and therefore, Sher-bakar is specifically a tiger hunt game (or tiger game).
 There are two tigers attempting to elude and capture as many of the other player's pieces which in other hunt games in this part of the world is often referred to as a goat, cows, lamb, or men.
 An interesting and uncommon feature in this game is that the goats, cows, lamb, or men are piled up on four points of the board at the beginning of the game.
 Piling up pieces is an unusual feature in hunt games or any board game in general.
 The only other hunt game that uses this feature is Bagh bandi, a game closely related to Sher-bakar.
 Hereinforth, the white pieces will be referred to as goats.
Orient Express is a crime fiction board game published by Jumbo and Just Games.
 The game is based on the book "Murder On the Orient Express" by Agatha Christie.
 The game was designed by Jeff Smets and released in 1985.
 The game contains 10 different murder cases, each of which can be played only once.
 Five new plots were released in 1987.

Question: Which board game was released earlier, Colt Express or Obsession?
Answer: Obsession