Bubble matching with 3D depth and Gimmick Bubbles.
Intrepid dinosaurs Bub and Bob are set to make their Nintendo 3DS debut in Tobidasu! Puzzle Bobble 3D. Square Enix will bring the the title to 3DS this spring.
The 3D screen will be used for "Gimmick Bubbles", and from the screenshots, it looks like characters from the bubbles that are popped float down to the screen below.
The series is also known as Bust-A-Move in North America and Europe.