Incredible level design and variety, alongside a fantastic new artstyle that breathes in so much life in these characters, create such a unique and varied platformer that propels modern 2D Mario to the same standard as 3D Mario. The only things I didn't particularly enjoy were the boss fights (Final boss was really cool though), and the game was generally extremely easy. Besides that, this is probably my favorite 2D Mario game tied with Yoshi's Island now.