IQ Fit & IQ Twist Puzzle Pack _With Bonus Twisted Nails Puzzle Set of 2 exceptional, compact, travel size, single player, IQ-building brain teaser puzzles. IQ Fit is a Multi-Shaped, 3D Pieces arrangement style puzzle with 120 challenges. IQ Twist is a squiggly-shaped, arrange the pieces over their corresponding same color pegs puzzle with over 100 challenges. Separate and rejoin the twisted nails is a fun puzzle which is not too difficult. Multi-generational puzzles. Suitable for ages 6 to 105 years. Many challenges and great play value.