Yes, in the spirit of a galactic game, why stop at petty country boundaries!
We could really escalate this!
First: Country vs Country
e.g. NZ v.s Australia
Then: Continent vs Continent
eg. Gondwondaland (Ancient name for land mass which was actually NZ and Australia joined together several billion years ago); vs. North America.
And then.....!Hemisphere vs. Hemisphere! (welome aboard Jappies!)
Could be all good fun!
Actually out of a staff of 20, I employ three Americans, One Canadian, One Chinese, One South African, One Englishman, we are a very inviting lot down here in NZ!