CodeDoku
Rate itFill a 3x3 grid with things that fit both their row and column clue.
on codedoku.app
CodeDoku is a daily grid puzzle where each of nine cells needs an answer that matches both its row clue and its column clue. Boards rotate between animals, countries, food and sports, with clues like venomous, nocturnal or lays eggs. Everyone gets the same board each day, and you have five lives.
About CodeDoku
CodeDoku is an indie browser game by Fernando Bittencourt, a Brazilian software engineer. Each day there is one 3x3 board on one of four themes: Animals, Countries, Food or Sports. Three clues run along the rows and three along the columns, and every cell must hold a concept that satisfies both of its clues: an animal that is both large and a reptile, for instance.
You tap a cell, choose a concept from the list and submit one move at a time. You start with five lives, and only wrong answers cost one. Correct answers turn green and can be cleared if you want to reorganise the board, while wrong ones stay open for another try. Progress saves automatically, so you can come back later in the day.
The daily board is generated, checked and shared by everyone, and a More Puzzles mode offers extra boards at any time. The site is available in English, Portuguese and Spanish. You can play as a guest; an optional Google sign-in, added in July 2026, syncs progress, a streak and more than seventy achievements to a public profile. It suits fans of Immaculate Grid style puzzles who want general-knowledge themes rather than sports rosters.
How to play CodeDoku
- Open the Daily Puzzle and read the theme, the three row clues and the three column clues.
- Tap a cell and pick a concept from the searchable list that fits both its row and its column.
- Submit the move; a correct answer turns green, a wrong one costs one of your five lives.
- Fill all nine cells before you run out of lives.
- Use More Puzzles for extra boards after the daily one.
Screenshots
Tips
- Start with the most restrictive pair of clues, where only a few answers fit.
- Use the ? buttons next to clues if a clue's meaning is unclear.
- You can clear green answers to move them; do that before spending lives on a stuck cell.
- Think of the obvious examples first; the theme lists favour well-known animals, countries and foods.
Questions
Is it the same puzzle for everyone?
Yes. The site says there is one daily board shared by all players.
How many mistakes can I make?
You start with five lives and lose one for each wrong answer.
Can I play more than one puzzle a day?
Yes, the More Puzzles mode has extra boards, separate from the daily one.
Which languages does it support?
English, Portuguese and Spanish.
Do I need an account?
No. The daily plays as a guest; signing in with Google is optional and only syncs progress, streaks and achievements across devices.
Ratings and reviews
Games like CodeDoku
Anything Grid
A handmade 3x3 grid of general categories each day, with past grids in an archive
Wildlife Sudoku (Flagdoku)
A daily 3x3 grid of animal categories, close to CodeDoku's Animals boards
GeoGrid
A daily board of country clues, like CodeDoku's Countries days, scored by how rare your answers are
Flagdoku
A daily 3x3 grid where each cell takes a flag matching its row and column features
Immaculate Grid
The original row-and-column grid, filled with athletes and scored by rarity
PokeDoku
The same nine-square idea with Pokémon types and traits
Movie Grid
A daily three by three grid of film clues with nine guesses
alikely
Tap the emoji that share today's hidden connection before your lives run out.