The game comes directly from Nintendo eShop, you will be able to go online, get updates etc.
After setup process the game will be available to launch on your own account, just as any other game or app you purchased directly in Nintendo eShop.
The billionaire and the bat: enter the fractured psyche of Bruce Wayne and discover the powerful and far-reaching consequences of your choices as the Dark Knight. In this gritty and violent new story, you'll make discoveries that will shatter Bruce Wayne's world, and shake the stability of a corrupt Gotham City to its very foundations. At your disposal is the sophisticated genius of Wayne and the fearsome skills of the Batman. What happens next is entirely up to you.