This is one of these things I feel a lot of hackers might know already but I only discovered them yesterday :)
When playing a nice pen and paper roleplaying game of Cthulhu, our GM had us trapped in a non-euclidean manor where the doors through which you went changed the configuration of the space. We had an insane clock device with us (in the shape of a symbol-ridden hexaflexagon as a playing aid on the table) that allowed us to eventually navigate through the thing.
The only catch was none of the players had ever heard of hexaflexagons and the GM flexed the device hidden from view. So we did an unspeakable amount of diagrams trying to figure out how the device might work. Good times.
Anyway, this is awesome and everybody should know about them.
When playing a nice pen and paper roleplaying game of Cthulhu, our GM had us trapped in a non-euclidean manor where the doors through which you went changed the configuration of the space. We had an insane clock device with us (in the shape of a symbol-ridden hexaflexagon as a playing aid on the table) that allowed us to eventually navigate through the thing.
The only catch was none of the players had ever heard of hexaflexagons and the GM flexed the device hidden from view. So we did an unspeakable amount of diagrams trying to figure out how the device might work. Good times.
Anyway, this is awesome and everybody should know about them.