Single-player card game Three Kindoms, originally an underachieving mobile game, has obtained remarkable results by quickly covering the developing cost after its launch in APP store. As the game developer, OneOne Games was once at the edge of the entrepreneurship failure. It was very inspiring that a small team of 5 could achieve that success, which looked accidently but actually was a result of finding a new way out. Several problems are inevitably encountered when starting the mobile game business, such as money, team, development, marketing and the particular problems for single-player games. This session will share with the audience the experiences and lessons learned from the developing process.