I Spy Castle includes 36 riddles set against 12 castle scenes, as well as 12 mini-games.
"In its 20th anniversary year, I Spy continues to attract new fans based on its brilliant approach to seek and find," says Deborah Forte, president of Scholastic Media and executive vice president of Scholastic. "We are excited to once again bring I Spy to the Nintendo DS to ensure fans can ‘play’ I Spy on a dynamic platform."