Took type 3 years before I got the chance to play it, but it was worth it, because this is the best Mario game since Super Mario World on the SNES. Terribly nice and nostalgic feeling :)
While New Super Mario for DS was fun, so this is a huge improvement.
And compared to last years Mario games, this game is more old-school hard drinker, so you do not rush through the game in 4 hours without ever see the Game Over screen ;)
Now waiting eagerly for the sequel to the Wii U.