I think it would be a great addition to the site if one had the ability to 'hide' the left side bar during a game.
What do I mean?
after hitting 'begin game' the menu options on the left (IE Game Menu, Interaction etc) disappear and the whole map, playing field etc slide over. A 'sidebar' link could be put on this new page to return the user to the normal screen view (with the left sidebar intact)
like S = Sidebar, P = playing area
normal:
S P
modified
P P
modified being a sort of 'full screen' mode
I hope this makes sense...