Question: Which game is older, TEG or Diamond?

Context paragraphs:
Public Enemy Number Two: Public Enemy Number Two is a novel written by Anthony Horowitz, the second in "The Diamond Brothers" series.  It was first published in 1987.  The main character in the book is Nick Diamond, His older brother Herbert Simple – who goes by the name Tim Diamond – is an unsuccessful private detective.  The novel is particularly known for its humour.  It is followed by "South By South East".

Kyrkbron, Umeå: Kyrkbron is a bridge in Umeå that takes Östra Kyrkogatan over Ume River to Teg on the south side.  The construction of Kyrkbron started in 1973 and it was opened on 26 September 1975 becoming Umeå's third bridge over the Ume river.  A discussion about whether or not the bridge should be located next to the church lasted from the early 1960s and continued into the 1970s.  During the construction an unknown burial ground was encountered (an older part of the cemetery), leading to archaeological excavations.

Briolette of India: The Briolette of India is a colorless diamond (weighing 90.38 carat ) that was found in India.  It is cut in a briolette shape, and is a D-coloured (colourless) type IIa diamond.  Its history was thought to date from the 12th century, when it was first acquired by Eleanor of Aquitaine, the Queen consort of King Louis VII of France between 1137 and 1152.  This makes the Briolette of India the oldest diamond on record in the world, even older than the famous Koh-i-Noor.

TEG (board game): TEG is an Argentine strategy board wargame published in 1976, based on the game "Risk".  The name is an acronym of "Plan Táctico y Estratégico de la Guerra", Spanish for "Tactics and Strategy for War".

The Diamond Brothers: The Diamond Brothers is a series of humorous children's detective books by Anthony Horowitz, the first of which was published in 1986.  The books tell the adventures of the world's worst private detective, Tim Diamond, and his younger brother, Nick Diamond, who is considerably more intelligent.  These books are aimed at young teenagers, slightly younger than those aimed at with the more recent "Alex Rider" series.  However, both series star a teenage boy and include guns, fights and worldwide criminals.  The most notable difference is that "The Diamond Brothers" series contains much more humour, with many puns, pop culture references and absurd situations.  Although the books started in the late 1980s and have continued into the millennium, Nick and Tim remain roughly the same age (14 and 28 respectively), while London changes with the times (the newer books feature Oyster Cards and computers for example, whereas the older books feature parts of London that have long since changed, such as smoking in offices).

Cherry, Cherry: "Cherry, Cherry" is a song written, composed, and recorded in late January 1966 by Neil Diamond.  The song (originally intended as a demo) was arranged by Artie Butler and produced by Jeff Barry and Ellie Greenwich.  It was issued as a 45 single in 1966 and became Diamond's first big hit, reaching #6 on both the "Billboard" Hot 100 chart, in October 1966, and the "Cash Box" chart.  Ellie Greenwich came up with the chorus and can be heard as the prominent background voice.  Diamond has stated that the song was inspired by an early relationship with a significantly older woman.

Bhaini Bagha: Bhaini Bagha is a big village in the Mansa district, Punjab, India.  It is on the Mansa-Bathinda road 10 km from Mansa.  A two-story modern stone jail which will hold 550 prisoners was constructed there in 2009.  This village is famous for Basketball Game.This village produced many popular Basketball players.  There are two famous historical Gurudwara Sahibs in village.  Gurudwara Rakabsar Sahib is associated with Guru Teg Bahadur Sahib Ji.Visit to the website of Bhaini Bagha https://web.archive.org/web/20151118085619/http://bhainibagha.in/

Diamond Mine (video game): Diamond Mine is a video game first published by MRM Software for the Acorn Electron and BBC Micro home computers in 1984.  It was reissued by Blue Ribbon in 1985 and ported to other systems in 1985 and 1986.  Blue Ribbon also released a sequel Diamond Mine II at the same time.  Both games are similar to the 1982 arcade game "Anteater".  While the maze design, limited pipe length and non-stop movement make the first game more original, "Diamond Mine II" could be considered an "Anteater" clone.

Diamond (game): Diamond is a two-player abstract strategy board game invented by Larry Back.  The invention was inspired by the game Kensington, which uses a similar board pattern and game objective.  Rules for Diamond were conceived in 1985 and finalized in 1994.  Diamond introduces a new board geometry and neutral pieces, with the aim of enhancing the game dynamic and lowering the potential for draws.

Tenés Empanadas Graciela: Tenés Empanadas Graciela (short TEG) is a turn-based strategy game distributed by several popular Linux distributions.  The idea for this free and open source software program came from the board game "TEG", which itself is based on the popular "Risk" game but differs in many aspects of the rules.

Supporting paragraphs: TEG (board game) Diamond (game)
Answer: TEG