A very solid 2D Mario. All NSMB games are well-designed but Wii busts out some interesting level gimmicks that I completely forgot about (even with boss battles like Bowser Jr.). It lacks a little bit of character, though, compared to the DS original. That's most apparent in the enemy variety and design, where it plays it pretty safe. The golden coins are very well hidden in this game. Generally, I feel the difficulty strikes a good balance. The game gets pretty challenging towards the latter half. It's obviously not a revolutionary platformer, but it's no doubt why this became such a multiplayer phenomenon back in the Wii era. It's a fun time. This probably ranks #3 among the New Super Mario Bros. games.