Some time ago I made this map, the thoughts behind it were this:
It is 1940, after a successful battle of Britain the Axis decide to give the green light for
Operation Sealion, the invasion of Britain.
Britain falls and so the USA hasn't got a European stronghold from where to operate and send supplies to.
With Britain defeated there isn't anyone to keep the Germans from reaching the oil fields in the Middle east.
With Britain defeated all eyes turn towards the East, and operation Barbarossa begins. With the German generals in charge, the German and the Italian army manage to capture the oil fields in the south.
Together with Finnish troops attacking the northern ports of Russia, it is left in complete isolation.
Ultimately Germany manages to take Moscow, and so with Russia losing its largest industrial complexes, Leningrad ultimately falls as well.
Stalin and his military regroup behind the Ural mountains, but Hitler doesn't chase them as they aren't a major thread anymore, the costs would be to high and the gains to low.
The story may be a bit shaky, but this is what it would look like, im not sure if, even when the Japanese manage to destroy the entire US Pacific fleet, they would successfully invade the US west coast.
Dark Brown is Gross Deutschland (greater Germany)
Lighter Brown are the regions controlled by a General Government (controlled by the Military )
Dark Blue is Italy and its Colonies
Light Blue are the Axis friendly regimes / countries
Shitty Brown are the German Colonies
Red is the Empire of Japan
Green in Africa, are the former Colonies of European countries now controlled by germany, but not yet taken it self. They are more or less independent.
Yellow is the USA
Russia has broken into several states
China has broken into several states as well
The British commonwealth of India, Oceania as well as Canada have self control.
Tell me what you think of it, would Germany have invaded Canada?
How could they have achieved a victory over Russia.
How could Japan achieve victory over the US and would it have been able to invade the US west coast? ( I myself highly doubt this, because the Germans wouldnt yet have invaded the US from the East)