The 3D effect is quite awesome in this game. It adds a huge amount of depth to the background and breaths life into the game's visuals. It's certainly not perfect, being an early 3DS game and all (this was a launch title for the 3DS in Japan), but at its best moments it is, far and away, the best 3D I've seen on the system yet. The static backgrounds and character models have also been replaced with fully three-dimensional models. Your environments actually seem alive in this game.