Published May 11, 2026, 8:40 AM EDT The leak may cost Playground Games millions Forza Horizon 6 has leaked online, 10 days before launch Image: Playground Games/Xbox Game Studios Sign in to your Polygon.com account Everyone makes mistakes, but Xbox 's Playground Games has made an error so costly that it could potentially affect the debut of the developer's upcoming racing game, Forza Horizon 6 . Set to launch on May 19, Forza Horizon 6 is a multiplayer racing-sim franchise that has long been an Xbox staple. The newest entry is set in Japan , meaning players will race past iconic landmarks like the Shibuya Crossing, Ginkgo Avenue, and Tokyo Tower. It also promises features like Horizon Rush, a new event type where players can show off their skills on obstacle courses, as well as updated car and environment sounds. All in all, Forza Horizon 6 looked as though it was shaping up to be one of Playground Games' biggest launches. However, that launch is now in jeopardy.…