I had an rather interesting game with Poland.
I modded the game a bit and gave Poland a few cores (Slowakia, part from Germany that is polish now).
At first I conquered Czechoslovakia, Lithuania and Hungary. Italy dowed me after I dowed Hungary. Then Germany dowed Italy. In return the allies dowed Germany...Everything in 36. I built up my army and prepared to conquer the Balkans when suddenly in 38 Soviet Union dowed me. I not only managed to fight of the attack, I went deep into their land until I was able to create a Russian puppet. Soon after that I made white peace with Soviet Union.
Then 1939, one month before Germany would declare me war, I put all my troops at the German border, it were around 190 divisions infantry (before you wonder, I modded the game to give me more manpower).
Germany fell rather fast because it had all of its troops at the french border.
I used Germanys IC to build IC for one year, after that I created the GDR.
After that I used my time to ally with the Balkan states instead of conquering and helped Yugoslavia to get some parts of Italy until they sued for peace.
Meanwhile I also conquered Ireland and Scandinavia and released them all as puppets.
After a massive gear for war, I declared war on the rest on Soviet Union, so my russian puppet could become stronger. Somehow the allies dowed them after that and suddenly the french arrived at Vladivostok.
Now, Japan is at peace with Nat.China and is in war with the allies.
I can't really dow everyone because all my puppets will give around 900 Divisions. I don't have to say that they are just to many for my Industry.
Well, that's the world today.
Damn, this was a good time.