Can see it now... because I'm on a desktop computer.http://www.futureshop.ca/en-CA/category/trade-in-games/27603.aspx?path=cb8953c32d74b1f39e3f640a2828c302en01
Click on the deal and the list will magically appear. It may change for next week though, but only slightly.
So I could buy Star Fox or MP3 for $30 (Walmart), play it for several days, and trade it in toward NSMB2.
Much chance that SF or MP3 will be removed from the list for the NSMB2 promo?