I couldn't update my comment so here is the citation from Valve's site. http://store.steampowered.com/app/353370 http://store.steampowered.com/app/353370 Requ

I couldn't update my comment so here is the citation from Valve's site. http://store.steampowered.com/app/353370 http://store.steampowered.com/app/353370 Requirements A Steam Machine or other computer capable of running Steam Big Picture Mode, in order to view, edit, save, and share Steam Controller mappings.* Big Picture Mode requires Steam to function. http://store.steampowered.com/bigpicture http://store.steampowered.com/bigpicture