Unlock Kids: Detective StoriesNumber of Players: 1 4 Unlock! is a co operative card game inspired by escape rooms that uses a simple system which allows you to search scenes, combine objects, and solve riddles. Play Unlock! to embark on great adventures, while seated at a table using only cards. Unlock!: Kids is designed for players ages 6+ and unlike other Unlock! titles, it does not require an app. Mac Unlock's Castle Scotland is yours, and so are its ghosts. . . and treasures!