This week’s North American Nintendo Downloads are as follows: Wii U Retail Mario Kart 8 (available May 30) Wii U Download Ittle Dew Gravity Badgers Luv Me Buddies Wonderland Wii U Virtual Console Klonoa: Empire of Dreams 3DS Virtual Console Mega Man Xtreme 2 New Nintendo eShop Cards $10 Nintendo eShop Cards including Photos with Mario – There’s a new...