Gridsum is a creative crossword puzzle game which can improve your math skill.
The game is a brain teasing, laid back puzzle that makes for an excellent fill of your spare time.
Challenge and level up your brain with Gridsum puzzle anywhere, anytime!
◾ 400 free puzzles of various sizes and levels
◾ Brainteasers from easy to hard
◾ Hint function when you are stuck
◾ Easy and smooth controls
◾ Suitable for both kids and adults
◾ All puzzles are free to play
◾ The object is to fill in the rows and columns with digits so that their sum matches the clues.
◾ The green boxes tell you the amount to be reached in each group of horizontal or vertical boxes.
◾ You will win when the game board is fully filled, without any mistakes.
Download and enjoy it for FREE now!