The GeoCube is a magnetic geometric puzzle. Each GeoCube consists of 12 magnetized Pyramids that are connected through hinges. The hinging allows the GeoCube to be transformed between different Shapes. The magnets allow it to lock into those shapes. Furthermore, the magnetism enables the GeoCubes to interact with one another to build Geometric Shapes of higher complexity.
 
The Nautilus Cube
The Nautilus was the second design used. The Outside features a Nautilus Shell and the inside a ocean wave.