Easier said than done though.
Right off the bat Germany will be consistently making more money than both Britain and the Soviet Union having taken out the rest of Europe and thats before they start attacking the Soviet Union.
Keeping the income advantage really only rests on America since the only change in their income will be losing the Philippines islands, as for everybody else, they can expect their IPC count to plummet with the combined strength of the Germans and Italians.
Also, like I said, taking Rome and Berlin is on the table to accomplish, taking Tokyo however not so much since A) it’s on an island B) It’s gonna have lot’s of dudes on it and C) the Pacific is too big to build any assortment of floating bridge and would be too expensive, hence why we would end the game if Japan is limited to their home island plus maybe Korea since they’re pretty much dead in the water so there is no point in playing any further.