Great longevity.
It really is a wonderful little game, but I have one quibble. I play on the highest level, and yes, the easiest way to win is to take Australia first. I long since stopped this strategy, as it is too easy to win. For taking Australia, you receive FIVE ARMIES, which is just, but a harder path to victory is by taking South America, for which you also only receive five armies. This is very unfair, since taking South America is much harder, requiring you to fight a war on two fronts. Personally, I feel that the conquest of South America deserves at least 7 armies, since the A.I. will probably have already got it’s grip on not only Australia, but a lot of Asia, and catch up is most difficult.