Genius Square XL - Supersized Race-to-Fill STEM Grid Puzzle

Genius Battle Game - Race and level up your puzzle skills! Think fast to solve the challenges before your competitor reaches the highest level. Develop - A perfect puzzle game for children and adults! Stimulate cognitive skills such as problem solving, flexible thinking and more! Brain-Challenging - Be the first to solve all 5 levels. Includes more than 60,000 puzzles divided over 5 difficulty levels. Test your speed and ingenuity with this unique and fun game for 1 or 2 players.