Question: which board game came out first, Vanished Planet or Battle Sheep?
Context: Imperium is a science fiction board wargame that was published in 1977 by the Conflict Game Company and GDW.  It was designed by Marc W. Miller and developed by Frank Chadwick and John Harshman.  The game came in a cardboard box illustrated with a space battle on the exterior.  It included a cardboard-mounted, folding map of a local region of the Milky Way galaxy, a set of rules and charts, and the 352 counters representing the various spacecraft, ground units, and markers, and a six-sided die. 1914 was a board wargame published by the Avalon Hill game company in 1968 and designed by James F. Dunnigan.  It was a corps-level simulation of the first few weeks of World War I on the Western Front.  The game came in an 11" × 14" cardboard box, and included a fold-out, cardboard-backed game map (22" × 28"), German and Allied cardboard counters, a set of dice, game variant cards, a mobilization chart pad for secret deployment, and various charts and instructions including a Battle Manual. War on Terror, The Boardgame is a satirical, strategic board game, produced and published in 2006 by TerrorBull Games.  "War on Terror" was originally conceived in 2003 by Andy Tompkins and Andrew Sheerin, two friends based in Cambridge, England.  The initial inspiration for the game came from the imminent Invasion of Iraq but, as a whole, was intended as a reaction and challenge to the counter-productive pursuit of the wider War on Terror.  In 2005, Sheerin and Tompkins founded TerrorBull Games and gathered enough financial support from a mixture of friends and acquaintances to put "War on Terror" into production. Komikan (from the Mapuche kom ikan "to eat all") is a two-player abstract strategy board game of the Mapuches (known by the Spaniards as the Araucanians) from Chile and Argentina.  The same game is also played by the Incas under the name Taptana, Komina, Comina, Cumi, Puma, or Inca Chess.  In modern Quechua, the language of the ethnolinguistic group that are the descendants of the Incas, Taptana means "chess".  It is known by the Aymaras, a neighboring ethnolinguistic group to the Quechuan people, as kumisiña.  Throughout South America the game is known as El león y las ovejas which literally means "the lion and the sheep".  The lion is actually a puma as there are no lions native to the Americas.  The Mapuches also call it El Leoncito.  J. I. Molina, in 1787, described it as ‘"el artificioso juego del ajedrez, al cual dan el nombre de comican"’ which translates to ""the ingenious game of chess to which they (the Mapuche) give the name comican"".  Komikan may actually be the same game as Adugo (Jaguar and Dogs) as played by the Bororó people of Brazil.  in 1898, Stewart Culin, the famed anthropologist, named a game played in Peru as Solitario.  The same name was also used by the game historian, Murray, in 1952.  The game may also be known in Peru as Kukuli.  Komikan is a hunt game, and specifically a tiger hunt game (or tiger game) since it uses an expanded Alquerque board.  Like all hunt games, there are two unequal forces at play.  In Komikan, one player has only a single piece, usually called a "puma" or "jaguar", or ""kom ikelu"" (in Mapuche language "the one which eats all"), or "leon" (Spanish for lion), which can move one space at a time or capture the other player's pieces by hopping over them.  The other player has twelve pieces (usually called a "sheep" or "goat" or "dogs"), or perros or perritos which is Spanish for "dogs" and "little dogs" respectively, that can only move one space at a time, but not capture, and attempts only to surround and immobilize the puma or jaguar.  Pieces must move and/or capture following the pattern on the board.  The expanded Alquerque board consist of an Alquerque board and a triangular patterned board attached on one of its side. Squatter is a board game that was launched at the Royal Melbourne Show in 1962, invented by Robert Crofton Lloyd.  With more than 500,000 games sold in Australia alone, it became the most successful board game ever developed in Australia.  Superficially, Squatter has the appearance of a "Monopoly"-type game.  However, unlike Monopoly, all players remain in the game until the end.  Players each start the game with their own sheep station and aim to be the first player to improve and irrigate their pastures and then fully stock their sheep station.  Players run their sheep station as a business venture, to earn enough money to pay for the seasonal running expenses and to finance the improvements that are required to win the game.  The Squatter game presents players with a mixture of strategy and luck that reflects the many challenges facing any form of livestock raising.  These challenges include droughts, floods and bushfires, as well as disease, variable livestock prices, and luck.  In 1999, a version became available on PC CD-ROM.  However the PC version was not commercially successful and is no longer available. Meurimueng-rimueng-do is a two-player abstract strategy board game from Sumatra, Indonesia.  It is played by the Acehnese.  The game was published in the book entitled "The Achehnese" by Hurgronje, O'Sullivan, and Wilkinson in 1906 and described on page 204.  The game is a hunt game similar to Pulijudam and Demala diviyan keliya.  They use the same triangular board.  Therefore, meurimueng-rimueng-do is specifically a leopard hunt game (or leopard game).  In this game, 5 tigers (or leopards) are going up against 15 sheep.  The sheep attempt to surround and trap the 5 tigers while the tigers attempt to avoid this fate by capturing enough of the sheep. Vanished Planet is a cooperative board game that debuted at the World Boardgaming Championships in 2003.  "Vanished Planet" pits the players against a time limit; the players must succeed in a certain number of goals before this time limit is reached, or they all lose. Battle Sheep is a 2010 board game developed by Francesco Rotta.  It has been published by Blue Orange Games, HUCH!  & friends and Lautapelit.fi. Dark Tower is a 1981 electronic board game by Milton Bradley Company, for one to four players.  The object of the game is to amass an army, collect the three keys to the Tower, and defeat the evil within.  The game came out during the height of the role-playing game craze in the early 1980s.  Advertising for the game included a television commercial featuring Orson Welles. Atlanta Civil War Campaign Game is an American Civil War board wargame which simulates the Battle of Atlanta.  It was published by Guidon Games in 1973.  The game came boxed with a hex grid map and 240 counters.
Answer: Vanished Planet