Equate 8

Equate 8 is a math puzzle based on the magic square. You rearrange numbers in a 3×3 grid to balance eight equations at once: three rows, three columns and two diagonals. The goal is to solve the grid in as few moves as possible, using multiple operators as the difficulty increases.

Puzzles and medals

Your medal reflects how efficiently you solve a puzzle: fewer moves earn silver or gold, while every completed puzzle earns at least bronze. A daily puzzle offers a free way to play and unlock content. Regular play earns “streaks” tokens, and you can exchange streaks and medals for Challenges, which are packs of themed puzzles.

If the grid feels too complicated, Snap Mode automatically locks a number when it is in the correct place. Snap Mode is available for a limited number of sequences before the game returns to the default mode.

Learning and difficulty

Equate 8 is designed for all ages, whether you want to practise math skills or exercise your brain. It is the sequel to The Devil’s Calculator. The game also has a feature that lets educators design levels aligned with their curricula. Donating to the nonprofit behind the game provides access to unlimited difficulty levels; the nonprofit develops educational games that are free for teachers and students.