I've been playing WGT, all categories of games, since June this year and I've been pleasantly surprised by the number of different countries my opponents are currently living in.
To date I've played against players from the following countries, in alphabetical order.
Australia, Canada,England, France, Germany, Greece, India, Italy, New Zealand, Pakistan, Romania, Scotland, Spain,The Netherlands, United States.
I'm sure there are many more and would be interested to know of players from other countries.
Cheers
Rob from Australia