A labyrimaze is a mix between a labyrinth and a maze. Incorporating a labyrinths single unicursal path, but also having maze like branches or decision points. Starting at an X, trace through every possible path as a single movement until returning to the same starting point. You may cross over a path at an intersection or a marked X, but never backtrack or lift from the path.
Download and try some of them free: http://smithandcoxco.com/labyrimaze/