Historical game expert Master Justin du Coeur shares a description and rules for Astronomical Tables, also known as "Seven-Sided Backgammon."
Description: "This game turns out to be a fast, slightly brutal version of tables. Bearing off isn't the point here; rather, the idea is to capture opposing men without being captured yourself."
The game uses a seven-sided board, and seven-sided dice, which Master Justin sculpted himself. The website includes descriptions of rules and equipment needed. (photos)
A photo taken by Cateline LaBorderesse at the 2011 Cooking Thynge event in the East Kingdom shows another varient of the game table.