Read the original post by Michael Washington at LightSwitch Help Website
Visual Studio LightSwitch in Visual Studio 11 allows you to communicate directly with the LightSwitch business layer (business rules, custom code, security), though OData. This allows you to use LightSwitch as the orchestrating control for any enterprise application or deployment.
In this example, we will demonstrate, using Visual Studio LightSwitch, an application to monitor and send messages to a Unity 3D online game.