The demo itself is little more than the full game's tutorial mode with Nintendo's Star Fox Zero: The Battle Begins animated short tacked on for good measure, but it's enough to give players an idea how the game controls. If it's enough to boost the game's sales is anybody's guess, but at least Nintendo seems to have learned its lesson about demos: a free version of Metroid Prime: Blast Ball launched today too -- over a month before Federation Force, its retail counterpart, hits store shelves. Both demos can be found on their respective Wii U and 3DS eShops.