> I don't see any selection neither.
Yes it's intentional. I thought if players can see the selection during the game, it is not challenging.
> It may be nice to start in the same continent of the player.
I think letting a user select a continent is a good idea.
It's too hard. I know enough geography to play only in a few parts of the map.
How good is the AI? We made a few mathematical games a few years ago and our problem was that the computer used perfect strategy. We had to add an easy mode. Perhaps your AI can have an easy model that does a shallow search to avoid stupid errors.