I’ve always been interested in the idea of a Once Upon a Time video game. I think the best way to do it would be as a Telltale point and click adventure game. Think the 2010 Back to the Future game, the Walking Dead games, and the Game of Thrones game. Another example is The Wolf Among Us, which curiously enough is based on Fables. Of course the comparisons between OUAT and Fables go far back.