New Super Luigi U is a Platform Game in the Super Mario Bros. series, originally released as DLC for New Super Mario Bros. U.As the title suggests, Luigi stars in this installment, which contains much harder levels than the original game. The two Toads also feature, and replacing Mario is Nabbit, who can't use power ups but is not harmed by enemies.The game released in late June 2013 for all territories, and a version released on a disc (housed in a snazzy green case) was released in late July for Europe and in late August in North America. November then saw a new Wii U bundle that came with New Mario U and New Luigi U together on a single disc.
New Super Luigi U provides examples of the following tropes:
An image of Luigi is hidden somewhere in every level. Sometimes it's an 8-bit Luigi hidden just out of sight by some movable obstacle or enemy, sometimes it's something more clever, such as his face replacing the skull insignia on one Banzai Bill Blaster, or his head replacing the Bowser head on the bow of one of the Airship stages.
Using the Nabbit trick in Flying Squirrel Ovation allows you to play as a Mii.
The Ghost: Mario. The only references he gets here is his cap inexplicably taking his place in the opening cutscene, the Miiverse letter recipient being changed from Bowser to Mario, and the "M" blocks that show up in every level after beating the game, which changes the physics to that of Mario when you hit them (i.e. lower jump, better traction). This effectively marks this game as the only Year of Luigi game in which Mario doesn't actually appear (he co-stars in Mario & Luigi: Dream Team, and shows up towards the end of Luigi's Mansion: Dark Moon as a Distressed Dude).
Mission Pack Sequel: The game is essentially a shorter, harder version of New Super Mario Bros. U. Despite being labelled as downloadable content, which typically requires the base game to be played, New Super Luigi U was released as a standalone title in stores at a reduced price.
Mythology Gag: The disc version is the only Wii U game (until Mario Kart 8) that doesn't have a blue case, so it sticks out from other games on a shelf — much like how New Super Mario Bros. Wii stood out because it was the only Wii game that had a red case.
Nigh Invulnerable: Nabbit, who can't be harmed by enemies, but is killed by any instant death traps. However, he can be stunned by touching particularly powerful enemies.
Nintendo Hard: New Super Luigi U is one of the hardest Nintendo games since the SNES era, although it's not quite as difficult as Nintendo's games of yore.
No Fair Cheating: Averted. In single-player mode, holding ZL (GamePad/Pro Controller) or B (Wii Remote) when entering levels will let you play as Nabbit, who is immune to all enemy attacks. You can make actual progress with him and the game will not fault you for it. Although, the inability to use power-ups may prevent you from collecting some Star Coins with him.