I've finally found a place which has game-compatible flags of the world at http://www.markfennell.com/flags/ (http://www.markfennell.com/flags/)
The files are in GIF format, so I've converted them to PNG and included them here. They are 30 x 18 pixels
Working on an extended type to handle it all :)
Copied the GB flag to UK as well
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These flags need to be attributed to markfennell.com if used, just thought I'd add that :)
Good point