Who were the players in World War 2?

Well, I wouldn't call them "players" probably more like factions, or sides. But you had the Allies and the Axis. The largest and most powerful countries in the Axis were: Nazi Germany, Japan and Italy. The major countries on the Allied side were: the United Kingdom, the US, the USSR (Russia) and France was in for the first year or so... But then the Nazi's took control of them, and they didn't help out very much until the Allies pushed them out of France.