I have just created a public mindmap with the hierarchy (and links) to the ontology described in the excellent Game Ontology Project. The mind map gives a much better visualization of the whole thing.
I made the map public, so feel free to edit it and update as needed :)
Hi, thanks for your efforts to create this mind map for GOP, it is great! However, I guess http://www.gameontology.com is currently down, and so the links on the map are broken. Do you know why the site is down? It seems it was last updated a year ago.