Milon no Hoshizora Shabon: Puzzle Kumikyoku

Milon no Hoshizora Shabon: Puzzle Kumikyoku is a Milon’s Secret Castle’s Puzzle game released for the Nintendo DS on July 6, 2006 only in Japan. It was developed by Takumi Corporation and published by Hudson Soft.
Similar to Puzzle Bobble games, the game consists on popping the bubbles of the same color. However, each bubble color group requires a specific placing to be popped:

Blue: A vertical line of 3 or more.
Red: A horizontal line of 3 or more.
Yellow: A complete 2X2 square.
Each character have different walking speed, bubble speed, scores for combos and scores for eliminate the most bubbles at the same time.