A perfectly serviceable Mario game and nothing more.
This was a great example of showing what the 3DS was capable of. It focused on the 3D screen for bonus areas and did handheld 3D platforming much better than Super Mario 64 DS purely because of the Circle Pad. But unlike 64 DS, the levels aren't memorable, and it's ultimately just another linear Mario game. Fun enough while it lasts, but nothing you're going to be thinking about in a month.
This was a great example of showing what the 3DS was capable of. It focused on the 3D screen for bonus areas and did handheld 3D platforming much better than Super Mario 64 DS purely because of the Circle Pad. But unlike 64 DS, the levels aren't memorable, and it's ultimately just another linear Mario game. Fun enough while it lasts, but nothing you're going to be thinking about in a month.