Bram's Fortress is an idea by Bram Cohen, inspired by several gear designs by Oskar. This twisty puzzle has eight Rubik's Cubes that are mutually connected by gears. If you turn one face, then four other faces turn with it.
This version is not for sale. There is too much force and manual alignment needed to make the puzzle turn.
Watch the YouTube video
Read more at the Twisty Puzzles Forum
Please contact Oskar
directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.