Sudoku, with extra rules — and grids you invent.

Grid Craft is 100 levels of 6x6 sudoku where the rules multiply as the adventure goes on. Same digits, same rows, columns and boxes as classic sudoku, but every grid adds its own figures: thermometers where digits rise, cages that add up like in killer sudoku, arrows, Kropki dots, sandwiches… Over thirty families of rules in all.

Every new rule makes you look at the grid differently: that's the whole fun of it.

AN ADVENTURE THAT TEACHES YOU THE RULES
• Each rule arrives on its own, with a drawn example, before it mixes with the others.
• Nine chapters that group rules by type of figure: lines, pairs, cages, clues around the grid… all the way to mixes and challenges.
• Most grids take a few minutes; the challenges ask for more patience.
• All 100 levels and the daily grids can be solved by logic, never by guessing.

BUILD YOUR GRIDS AND SHARE THEM
• A touch editor: place your digits and the game's figures.
• It checks that your grid has a single solution, estimates its difficulty and can remove digits for you.
• Share it with the community, under your nickname, with a short message for players. Grids are moderated before they are published.
• Play other players' grids.
• Liked a grid? Open a copy in the editor and make your own version.

A GRID A DAY
A new level every day, even offline.

MAKE IT YOURS
• Center and corner notes, colors, drag to select.
• Night mode, left-handed mode, hideable timer, digit and note colors to your taste.
• A guided tutorial to get started, and the adventure plays offline.

HINTS THAT EXPLAIN
Stuck? A hint never gives you a digit without showing why. It walks through the deduction on the grid: the column to look at, the cells ruled out, the digit that blocks. You improve as you play.

FREE, NO FORCED ADS
All 100 levels are fully playable for free. No banners, no forced videos. You start with 5 free hints; a short video earns you another, and packs are available.

And when the adventure is over, the editor and the community's grids take over.