47. New Super Mario Bros. Wii (Wii)
New Super Mario Bros. Wii marked the return of 2D Mario to a home console after a lengthy absence. The game introduced the ability for up to four players to play at once, but it was still the single player option that I focused on. Outside of that multiplayer option, there wasn't really anything greatly different from its predecessors, but as it had been so long since Super Mario World (or Yoshi's Island depending on how you count that), simply being able to play another game in the series on a home console was welcome enough.
My 46th game is a sequel to a classic. Sort of.