Game Closure enables developers to take their games to the multiplayer, multiplatform market in an easy, cost-effective manner. Our tools remove all the pain points in building multiplayer games, vastly simplifying debugging, hosting, and development. Furthermore, we compile games to hardware-accelerated native apps for immediate distribution on Android, iPhone, Facebook, and other locations. We leverage the HTML5 APIs (and contribute to them) to bring the future of web and mobile gaming to everyone. Our hit titles include EverWing and LINE: Disney Tsum Tsum!