The 3ds release of dragon quest vii has the entire game in 3d except for the battle transitions, which is a very jarring effect; every time you enter a battle, the 3d turns off for a few moments as the battle transition plays, and then it returns for the in-battle graphics.
I didn't notice this until now despite playing through most of the game because I generally play with the 3d turned off, and just now turned it on on a whim.