In what could have been just another Phoenix Wright game, but presented from an opposing perspective, Ace Attorney Investigations diverges from tradition more than any other title in the series -- which is to say that it actually diverges from tradition just a bit. The focus is still heavily on plot, characters and clever yappin', but the sterile, first-person point-and-click investigation process has now been replaced with a third-person view.
The control system is functional, but quite unnatural in one respect. You can maneuver Edgeworth through the 2D environments, displayed on the DS' top screen, by either dragging the stylus across the touch screen or simply using the d-pad (thanks for the option, Edgey!). When you've gotten him close enough to an item of interest, you tap a context-specific icon on the bottom screen to interact with it. So, it's less point-and-click and more walk-over-there-and-tap-the-button.