NEW YORK, N.Y (AP).- The majestic main branch of the New York Public Library is seeking 500 people to spend the night there on a scavenger hunt in late May designed to tap into their inner creativity and potential as they explore its miles of rare treasures. The hunt, called “Find the Future: The Game,” was created for the library’s centennial celebration by Jane McGonigal, renowned for designing games that tackle real-world problems. “We realized that if we could bring players face to face with these treasures, these world-changing objects from the past, they would be able to tap into their own world-changing potential,” said McGonigal, the author of the best-seller “Reality is Broken: Why Games Make Us Better and How