US Patent 9498720 Sharing games using personal audio/visual apparatus

A game can be created, shared and played using a personal audio/visual apparatus such as a head-mounted display device (HMDD). Rules of the game, and a configuration of the game space, can be standard or custom. Boundary points of the game can be defined by a gaze direction of the HMDD, by the user's location, by a model of a physical game space such as an instrumented court or by a template. Players can be identified and notified of the availability of a game using a server push technology. For example, a user in a particular location may be notified of the availability of a game at that location. A server manages the game, including storing the rules, boundaries and a game state. The game state can identify players and their scores. Real world objects can be imaged and provided as virtual objects in the game space.