Correction, he is expanding. You're phrasing implies to me that he is changing from God of Games to God of the Real, when it is obvious he will never stop being God of Games. Any godhood he has over the real world is secondary to the game world.
About the only difference between her and the Yokkyun/Keima pic is that Shiori's eyes are red (Yokkyun's are blue) and <s>she doesn't have that one lock of hair that flips up</s> her hair is about half the length of Yokkyun's. Otherwise, Yokkyun's an expy of Shiori.