Sonic Rush Adventure review at Gamespot.

"2005's Sonic Rush for the DS was a 2D side-scroller that picked up where the already excellent Sonic Advance series left off, injecting a little polygonal flair into the graphics and the gameplay, making smart use of the DS hardware, and generally serving as a bracing reminder of what made Sonic the Hedgehog so great in the first place. At its core, Sonic Rush Adventure offers a very similar experience, filled with an incredible sense of speed, serpentine levels, a variety of gadgets, contraptions, geegaws, and whirligigs for you to fling yourself off of, and rings, rings, rings. What Adventure adds is more structure outside the action, as well as some brief moments of simple 3D action. Some of these additions arguably don't add a lot to what made Sonic Rush so great, but they don't take away from it, either."

Full Source: Gamespot