Pro:
-Good Graphics
-Very Nice 3D effect and that all the time
-Unterhaltsame Minigames (puzzles, tetris moderately)
-Countless Various quick time events thanks to countless different enemies that might differ hardly different.
-Very Very large game world
-Überall Anytime storable
-Very Challenging boss
-Many Tasks next
-Schnellreise System invites you to rediscover a thanks to the skills without previously impassable roads made
-Erkunden Of cities and scenes is well exploited
-Very Good integration of extras at level up for Mario and Luigi that is that they are not constructed the same if you do not want. One can thus build good tactic.
-Extremely Good turn-based strategy, many items.
-Very Good story telling. ie not all is just there but it always has the urspung is also explained.
Cons:
Well there is not much that would be bad except that the puzzles are sometimes kept simple. A properly crunchy nut, there has been not really.
I hope I could help you with it to make your decision but who has a 3DS, this game is a mandatory title.