Mario's debut on 3DS will come both in a kart and as a piece of paper. Nintendo have created a new entry into RPG series Paper Mario just for 3DS. If it's going the same way as the latest game in the series, Super Paper Mario on Wii, that 3D screen is going to get a going-over.
Super Paper Mario featured characters wandering in and out of the screen to solve puzzles, and it wouldn't be surprising to see the same happen here. Especially with the backgrounds the way they are in these screens...
Are you excited about Mario's 3DS adventure, or would you rather give yourself a paper cut?