This tilting feature is an integral part of the gameplay, and it really makes Kirby original and a lot of fun. The designers built the game around this sensor instead of putting a sensor into the game, and it really shows... Since you cannot zoom Kirby around the mazes without screwing up, patience is needed. Of course, you can't take your sweet time—the clock is ticking.
You're limited to where and how you can play the game, really... I've played the game outside and in a hotel room with no problems, but on the plane it was a little difficult because of the position you have to hold the system — it's not exactly a game you can sit in your most comfortable position and play.
Children who play Kirby in the back seat of the car will learn to loathe potholes and quick turns, which can make Kirby spin out of control.
Yes, Kirby Tilt 'n' Tumble is a gimmicky game, but it's a gimmicky game done well.