SEC: online geography game sought

["Carol A. McWilliams 407-384-2078" <MCWILLC@MAIL.FIRN.EDU>]

Has anyone used a good online geography game that gives immediate feedback
and is suitable for high school students?  I'm looking for a web-based game
rather than email.  If you can point me in the direction of a relevant URL,
I would appreciate it.  Or, rather, my son's geography teacher would
appreciate it!  Please, if you know of one, email me directly at the
address below.  If there are enough replies, I will post a HIT.  TIA!
Carol McWilliams
assistant director, SUNLINK
University of Central Florida
mcwillc@mail.firn.edu