Binary / Takuzu
Fill the grid with two symbols. Each row and column is balanced, has no three in a row, and is unique.
Easy–Expert · 45 puzzles
Games
Twenty logic games. Each offers a free daily grid, a deep library, and reasons to return tomorrow.
Contribute DIG to unlock new games. When the fund reaches its target, the game unlocks on Digigma.
Calcudoku
Latin square plus cages.
Easy–Expert · 4 puzzles
Codebreaker
Crack the hidden code using exact and misplaced digit clues.
Easy–Expert · 59 puzzles
Cross Math
Cross equations with ×÷ before +−.
Easy–Expert · 2 puzzles
Futoshiki
Place 1–N once in every row and column, while respecting the inequalities.
Easy–Expert · 36 puzzles
Higher or Lower
Guess the hidden number. Each answer says higher or lower.
Easy–Expert · 1 puzzles
Hitori
Shade duplicates; black cells cannot touch; whites stay connected.
Easy–Expert · 3 puzzles
Kakuro
Fill each run with distinct digits 1–9 so they add up to its clue.
Easy–Expert · 29 puzzles
Killer Sudoku
A 9×9 Sudoku whose cages must sum to the printed totals. Digits do not repeat in a cage.
Easy–Expert · 25 puzzles
Kuromasu
A number counts visible whites, including itself.
Easy–Expert · 2 puzzles
Minesweeper
Reveal safe cells. Mine positions stay on the server.
Easy–Expert · 2 puzzles
Numberlink
Full-coverage paths from 4×4 to 8×8, no self-touch.
Easy–Expert · 4 puzzles
Numbers Game
Get closest to the target in 2:00: accuracy first, then elapsed time.
Easy–Expert · 6 puzzles
Nurikabe
Islands of the given size, one sea, no 2×2.
Easy–Expert · 3 puzzles
Shikaku
Partition the grid into rectangles. Each number is the area of its rectangle.
Easy–Expert · 113 puzzles
Skyscrapers
Fill heights 1 through N. Edge numbers count how many buildings are visible from that side.
Easy–Expert · 98 puzzles
Sudoku
A classic 9×9. Put 1 through 9 in every row, column, and box.
Easy–Expert · 31 puzzles
Suguru
Each region of N cells contains 1 through N. Equal digits never touch, even diagonally.
Easy–Expert · 35 puzzles
Tents & Trees
Place one tent next to each tree. Tents never touch, even diagonally.
Easy–Expert · 1 puzzles
Yakazu
White runs of length N contain 1 through N. Black cells block the runs.
Easy–Expert · 43 puzzles