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Grand Tribunal is the European convention for Atlas Games' Ars Magica role-playing game.
Our 2025 event takes place from Fri 15 to Sun 17 August 2025, Cheltenham, UK.
In French: Page Principale / In German: Das Grand Tribunal / In Spanish Grand Tribunal
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Buy Tickets
You can buy tickets for our 2025 event right here.
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About
Grand Tribunal is a roleplaying, freeform and boardgame convention dedicated to the games and settings of Atlas Games
The campaign for Ars Magica: Definitive Edition is currently LIVE [- on Backerkit. ]
The convention is of especial interest to fans of Ars Magica, and also Unknown Armies, Over the Edge, Rune and other Atlas Games rpgs. We also have some freeform larp games, but a large Ars Magica themed game suitable for everyone, and some smaller freeforms (in fact the first 'Nordic style' larp run in the UK took place at Grand Tribunal in 2007).
To add a game to the programme please [- fill in this form.]
Grand Tribunal is a small, intimate and friendly event, and while it attracts a number of Ars Magica and RPG authors, it is very accessible to even casual gamers.
This is a wiki-based website; we encourage attendees to add your own content - find out how.
Practical information
- Tickets - how much it costs (quick answer: very cheap) and what's included
- Venue - directions, maps, facilities, accommodation, transport and disabled access
- Programme - session times, early arrival meet & greet, restaurant and pub times
- Games - the individual games being run, who is running them, and how to sign up to play
- People - staff, attendees - introduce yourself
- Ethos - policies, guidelines, collections of thoughts
- Charity Raffle- the famous raffle and prizes you can win
- Retail - while we don't have a retailer present this year you can advance order for deliver to the convention
Keep in touch
grandtribunalsubscribe@groups.io is our email list where we do most of the organising, and where you can talk directly to the organisers and attendees
- Hashtag #gt25uk on Twitter is especially useful for minute-by-minute updates during the event itself
- Find us on Facebook, like us and spread the word
- Mobile devices such as smartphones should automatically see the mobile version of this website/wiki, but you can find out how to control which version you see
Archives and colleagues
Thanks to Pitt Murman for hosting the Grand Tribunal wiki from 2007-2012. From 2013, the site is hosted by Andrew Oakley.
- 2012 Grand Tribunal UK (partial graphics) - 2011 - 2010 - 2009 - 2008 - 2007
- 2024 Grand Tribunal UK - 2023 - 2022 - 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013
Further credits
- Thanks to Atlas Games for the Ars Magica game and letting us use their intellectual property
- Thanks to Gas Green Community Centre for allowing us to use their venue
- Thanks to Karl Trygve Kalleberg for use of the grandtribunal.org domain name.
Cheltenham Freeforms
This wiki is also host to Cheltenham Freeforms, a non-contact live-action roleplaying group who frequently use Gas Green as their venue. Many of the people who participate in Cheltenham Freeforms also participate in Grand Tribunal UK.
- Cheltenham Freeforms on Facebook, the primary source of information
- Cheltenham Freeforms on this wiki, a repository of supporting files for those events
UK LARP History
A tentative research piece by CJ
