There is still a lot not done but I am fairly sure this is the most customized website done with XenForo including XenForo powering the Savage (a multiplayer fps/rpg/rts) API, Auth, stats and clans systems. An example to see some of the stats integrations (still wips) you can click a username to see the new overlay. The Savage clients and servers all communicate with XenForo through a custom API to do things like send end of match stats to the stats server which XenForo will handle on the lower level.
This is a custom website built by a developer (as in me) to be maintained by a developer so maintaining is done on the VCS and not through interfaces in the ACP etc. I am just saying this so people don't start asking for things that the website does, it is made to get deployed as soon as possible not to be easy for some admin to manage.
There is a lot more to come. Including a splash page which will also be powered by XenForo and even a section for clans to create their own pages. This shows what XenForo is capable of in the right hands and for the record the code is very easy to maintain for anyone who knows how XenForo works. This website was originally going to be built on SMF which is the platform I used to work on. To do it on SMF I was making my own mini frameowork to wrap SMF and it would be far harder to maintain and have much poorer results, luckily XenForo came to light soon after we had started.