[3] The inaugural MSO along with a very large number of games, introduced two new events of their own creation the Pentamind and the Decamentathlon.

[7] The Mind Sports Olympiad main event continued to happen but without sponsorship the tournaments were held at a number of different universities.

But in 2007 the Mind Sports Olympiad was reduced to a much smaller venue in Potters Bar due to no sponsorship and no advertising.

[9] In 2008 the MSO saw a revival returning to a central London venue, the Royal Horticultural Halls, Westminster and again on 21–31 August 2009.

[13] The Mind Sports Olympiad main event has been annual since 1997 at the following locations in England: The MSO consists mainly of single event competitions most of which are for the nominal title of Olympiad champion, though some trademarked games are authorised by the game designer and publishers as the official world championships.

In recent years such prizes have been limited to a small number of events, usually as a result of specific outside sponsorship for that discipline.

Notable games include (most other refs mention some of these):[23] The well-known: Chess, Bridge, Draughts, Shogi, Backgammon, Chinese Chess (Xiang-Qi), Othello, Poker, Cribbage, Mastermind And many newer games like: Abalone, Boku, Continuo, Entropy, Kamisado,[24] Lines of Action (LOA), Pacru,[25] Twixt At MSO tournaments, the Decamentathlon is a composite event in which players compete in ten separate mind sports.

The remaining two mental skills have changed over the years and come from this list: contract bridge, Backgammon, Mastermind, and most recently Sudoku.

The Mind Sports Olympiad is run by MSO Limited, which is registered in the UK with company number 04712990, and was incorporated in 2003.

These have occurred in Cambridge, England;[34] Singapore;[35] Seoul, South Korea;[36] Milan, Italy;[37] Oulu, Finland;[38] and Prague, The Czech Republic.