Theist

Here is a game. If anyone in this world can play this game successfully, then she will be able to prove the existence of God with the help of science.

Let us suppose that this universe has a creator. If this creator is to keep proof of his existence in the created world in such a way that it can be easily recognized as proof of a creator, then which proof will he keep?

Anybody can play this game, theists and atheists alike, because it starts with a supposition only.