Bust-a-Move DS known as Pullback!! Puzzle Bobble (?????!!?????? Hippatte!! Pazuru Boburu) in Japan is a puzzle video game developed by Happy Happening and published by Majesco Entertainment for the Nintendo DS handheld video game console. The game received mixed reaction due to the game lacking new features apart from the new slingshot system. Instead of the usual firing mechanism used in previous games in the series a slingshot system is used to fire bubbles controlled by the stylus and the touch screen. There are 500 levels in all divided evenly across two campaigns and grouped into 50 sets of 10 levels; players must finish a set's 10 levels in one sitting to progress.