They're mostly games announced today!
Hot off the Nintendo E3 Direct, Reggie brings the news of what exactly fans will be able to play at the Wii U Best Buy event. Let's cut to it: Mario Kart 8, Super Mario 3D World, The Legend of Zelda: The Wind Waker HD, and Donkey Kong Country: Tropical Freeze will be showing up at your Best Buy location in playable form.
The event is tomorrow, June 12, at 4-8 PM and Saturday, June 15 at 1-5 PM. There's also word that the event will have "Luigi loot" for those who show up. The closest location to me is about an hour away, which isn't really worth it... but then again it really is. For more information head to Best Buy's website.