When a new game gets DLC, what do you often think that DLC is? A new level/weapon, a cosmetic change, or a small new game mode, right? Or, at most, it's a small expansion with a little of all of those things, right? Right. Not "New Super Luigi U," though: building on the formula from "New Super Mario Bros. U," "Luigi U" is a full-fledged game in and of itself, with eight worlds to travel to, just like in "Mario Bros. U." And, admittedly, it's a lot of fun!
Being a slightly different version of "Mario U," there's a lot to like about "Luigi U" from the jump: the gorgeous visuals, the polished gameplay, and the great level design are all still here. And with new "Luigi physics" (slippery movement and flutter jump), the game feels pretty different. That, and it retains the fun and frantic multiplayer modes from "Mario U." That's a lot out of a simple "DLC expansion" but it's because of this that "Luigi U" shines.
Unfortunately, the game still feels awfully similar to "Mario U," and the difficulty has been jacked up A LOT, to the point where newcomers to the platformer genre might want to start with something else.
Even so, considering all that it does as a downloadable expansion, "New Super Luigi U" is a nice, polished expansion and a solid addition to your Wii U library.
Final rating: 8 out of 10 "Great"