Pulp Era and Golden Age Theme, WWII
Its the time of the second great war, the Axis and her agents some superpowered are fighting the American and allied way of life. Into this come the greatest team of heroes ever assembled The Extraordinaries. Fight the fifth columne, bash the Axis menace and protect the way of life of freedom and justice. (Save the Soviet members they are in under orders... LONG LIVE THE COMMUNIST IDEAL!!!
Will have some rules but LIGHT and as for powers you are not going to be all powerful. You will at most have a few weaker ones. Or one really good one.
Examples: Spy Smasher, Spirit of 76, early Iron Man and the like.
Setting likely DC but just because I like it more.