Twitter user @Tanfuku showed a concept for how HoloLens could expand the capabilities of existing games by displaying UI elements outside of the game world. It's something we've theorized as a possibility in the past, but this video gives us a better idea of how it could look in practice. Tanfuku's video shows how HoloLens could be used by the popular MMO Final Fantasy XIV to display stats, maps, inventory menus, and other panels that are entirely necessarily for gameplay, but heavily clutter up the interface. Systems like the Nintendo 3DS and Wii-U also make use of extra displays to show menus, maps, and other UI elements to prevent them from interfering with the main game itself.