Dragon Quest IX: Sentinels of the Starry Skies (ドラゴンクエストIX 星空の守り人, Doragon Kuesuto Nain Hoshizora no Mamoribito) is a role-playing game developed and published by Square Enix for the Nintendo DS. It is the ninth installment in the popular Dragon Quest series. The game was released in Japan in July 2009, and in North America in July 2010. The game follows a group of adventurers as they explore the world of Angel Land, fighting monsters, completing quests, and gaining experience as they progress. Players can customize their characters with different classes, weapons, and armor. The game also features a multiplayer mode, allowing players to team up with up to four players to complete quests and battle monsters. Dragon Quest IX: Sentinels of the Starry Skies is a classic JRPG with a wide variety of content, making it a great game for players of all ages.