Spirit Hunters Inc: Shadow is a single-player augmented reality game in which players scan real-world locations to hunt, battle, and capture spirits using their Nintendo DS or Nintendo DSi. In this game, players join the Spirit Hunters Inc organization to capture and battle spirits, with a storyline centered around becoming a professional spirit hunter and discovering rare spirits. It stands out with its use of augmented reality technology, allowing players to interact with spirits in the real world, and features a unique challenge code system for exchanging spirits and battling with friends, along with a variety of spirits, abilities, and game levels.