The JOEdecahedron is based on a real thing: the ancient Roman dodecahedron. Historians have uncovered these mysterious metal doohickeys all over old Roman territories, and no one — literally no one — knows what they were used for. Seriously.

So, he naturally thought, "What if I made one, too? In my color… In 3D-printed glory. For my fans. For science. For… reasons." Hence: the JOEdecahedron.

And now you can have one, too!