That depends. Mainly on how good the game is, and if you are going to make a game that wil sell for more than $10 each, get someone to help with it. Someone can code, and someone can do the animations.
But usually a good game sells for $40-60 each. But it all depends on how good, like I said.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.