- Mr. Mystery Invisible Ink Game Book has hours of fun and enjoyment!
- Heaps of games to blast boredom!
- The yes & know pen reveals the invisibly printed answers.
- Games include - Mazes, Hangman, Jailbreak, Battleships, Twins, Top Secret and Line-up.
Warning: Not recommended for children under 3 years old.
Ideal for Ages 7+