This week’s North American Nintendo Downloads are as follows: Wii U Download Gunman Clive HD Collection – $3.99 Wii U Virtual Console Mario Golf – $9.99 VS. Excitebike – $4.99 3DS Retail Are You Smarter Than a 5th Grader? – $29.99 3DS Demo Proun+ eShop Sales Wii U – Jett Tailfin is 23 percent off (reduced from $12.99 to $9.99)...