Nintendo has done other DLC's, but this is the largest I believe. It's also a whopping $20 dollars for a largely "reskined" game.
Not even close. The game mechanics, and level design are all completly different. The only thing the same about it is the map itself. All of the levels are totally redone and have nothing in common with the original ones. You may have assumed what you said in the first place, but it's bad information that isn't correct, and there is no reason to get people here thinking something that isn't true. The only thing reskinned is Mario into Luigi, that's it. Everything else is different.
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