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.
Throw an impromptu party anywhere with anyone thanks to a new play style in which players look at each other—not the screen! Bring the action and fun into the real world as you face off in wild-west duels, cow-milking competitions, a copycat dance-off, and more. Each game takes advantage of the Joy-Con controller features of the Nintendo Switch system in different ways. While the action unfolds off-screen, the audience watches the players themselves instead of the screen. That makes it as hilarious to watch as it is to play—an instant party amplifier!