Cages is a calcudoku puzzle: fill every row and column with the numbers 1 to N, and make every outlined cage hit its arithmetic target. Every puzzle has exactly one solution, and every solution can be reasoned out. No guessing, ever.

If you like sudoku but want the numbers to mean something, calcudoku is the puzzle where they do. Each cage carries a target and an operation — add, subtract, multiply, divide — and the arithmetic is what narrows the grid down.

A PUZZLE EVERY DAY
One daily calcudoku for everyone, from a gentle 5x5 on Monday to a full 8x8 on Sunday. Solve it to keep your streak alive. Miss a day and you can mend it with a flame rather than starting over. Full weeks and full months earn rewards.

ADVENTURE WORLDS
Hand-built worlds that climb from 4x4 meadows to storm-swept 9x9 summits, each one introducing a new idea rather than just a bigger grid. New premium worlds arrive every two weeks.

HINTS THAT EXPLAIN THEMSELVES
A hint here does not simply fill in a square. It shows you the cage it is reasoning about and why that cage can only work one way, so the next puzzle is easier because of it. The tutorial teaches the same way.

THREE LEADERBOARDS
Race the daily on time, climb the streak table, or play the long game on the all-time board.

BUILT TO BE COMFORTABLE
- Pencil notes that clear themselves as the grid fills
- Drag across the board to move the selection
- Mistake highlighting you can switch off entirely
- A timer you can hide
- Full offline play — the daily and every unlocked world work with no connection
- Sign in with Google to carry progress across devices, or do not sign in at all; the whole game works without an account

Free to play. Optional purchases remove ads and unlock premium adventure worlds.

ADVENTURE PASS
Every premium world unlocked and no ads, for as long as you subscribe. $2.99 per month or $19.99 per year, charged to your Google Play account and renewing automatically unless cancelled at least 24 hours before the period ends. Manage or cancel any time in Play Store subscription settings.

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Calcudoku is also known as mathdoku or cage math. If you enjoy killer sudoku, kakuro, or any number logic puzzle where arithmetic does the work, Cages will feel like home.