The commonwealth comprises (well, all but two) of countries that used to be part of the British Empire. Not all countries in the world were part of the British Empire, therefore not every country can compete.
In our system the commonwealth has only limited power, which is vested to it by the Constitution, power that is not held by the commonwealth is handled by the states. So the purpose of the state governments is to govern in the areas of law that the commonwealth cant, or wont.
get a high percentage in most of the games but you have to be the tour manager before you can be the boss. If you cant complete the games just sneak past the paintings and enter in to the password: foldee . Have fun playing! :)