This special edition of the Bethorm rulebook was distributed to most backer levels of the Kickstarter project to fund the development and publishing for the core rulebook. The PDF version was released on 7 October 2014.
from What is Bethorm?
Béthorm is a science-fantasy tabletop role-playing game set in Professor M.A.R. Barker’s World of Tékumel. This book presents a complete set of role-playing rules tailored for Tékumel adventures.
“Bethorm” is also the Tsolyáni word for a pocket dimension. Tékumel’s solar system exists in just such a pocket dimension, and this game was designed using the Pocket Universe role-playing system.