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.
Fight your way through an all-new action-adventure game, inspired by classic dungeon crawlers and set in the Minecraft universe! Brave the dungeons alone, or team up with friends! Up to four players can battle together through action-packed, treasure-stuffed, wildly varied levels – all in an epic quest to save the villagers and take down the evil Arch-Illager!