Bangai-O Spirits (バンガイオースピリッツ) is a 2D side-scrolling shooter developed by Treasure and released by D3 Publisher for the Nintendo DS in 2008. It is the fourth game in the Bangai-O series, and the first to be released outside of Japan. The game follows the story of Riki and Mami, two siblings living on an isolated island who discover an ancient robot called Bangai-O. The two must use the robot to fight off an alien invasion, and in the process, unlock its true power. The game features a variety of levels, each with its own unique objectives and enemies. Players can use a variety of weapons and power-ups to defeat their foes, as well as special abilities to aid them in their quest. The game also features a level editor, allowing players to create their own levels. Bangai-O Spirits features a unique blend of action and puzzle elements. Its fast-paced shooter gameplay is complemented by strategic elements, such as the ability to create and use weapons and special abilities to overcome obstacles. The game also includes a multiplayer mode, allowing up to four players to compete against one another. Overall, Bangai-O Spirits is an enjoyable shooter-puzzle hybrid that offers a unique experience on the Nintendo DS. With its vibrant visuals, enjoyable gameplay, and level editor, it is sure to please fans of the series and casual gamers alike.