Trusted by Families Worldwide - With over 50 million sold, ThinkFun is the world's leader in brain and logic games. Develops critical skills - Learn logical reasoning and deduction skills through fun gameplay. What you get - Clue Master, a fun logic game and STEM toy, Includes 9 magnetic tokens, game board, 40 challenges and solutions and instruction booklet. Clear instructions – Easy to learn with a clear, high quality instruction manual. You can start playing immediately! Comes with multi-level challenges - Clue Master comes with 40 beginner to expert challenges that become increasingly difficult as you play through them.