Grim Stacks: Books & BindingPuzzle Effect - San Luis ObispoEscape roomIRLThe challenge was appropriate for our 7, 12, and 14 year olds. Game master Jacob was great at orienting is to this genre of family fun as this was our first. The lock and code puzzles were tricky enough to require hints, especially in the beginning. Watching the Mark Rober video on escape room tips was also useful, even if we didn't follow them faithfully. Stay organized with this one, is all I will say.