Digit Pairs – Number Puzzle Game, Brain Training & Logic Challenge Digit Pairs is an addictive number puzzle game where you merge matching digits, create bigger numbers, and solve challenging logic puzzles. Designed for fans of brain games, math puzzles, and relaxing casual games, Digit Pairs offers a perfect balance between simplicity and strategy. If you enjoy number games, merge puzzles, and brain training apps, this game will keep you engaged for hours.