The American Monoxide Great Six Sider Eulerian Circle Disc from 2014 got some press out of nowhere, and some folks have had a hard time finding it. So, if you came here to get it, grab one here: http://piaptk.com/products/530766-dimitri-manos-am...
If you haven't seen the article, here it is: https://www.core77.com/posts/91823/A-Playable-Six-...