Star Sudoku

About Star Sudoku

Sudoku under the stars! Fill every row, column and box with each number once. Every full box lights a star in this chapter's constellation. No guessing needed: every level has one answer you can work out.

Star Sudoku is a free sudoku puzzle you can play right in your browser on iPhone, iPad, Android phones and computers. There is nothing to download: tap Play and you are in, and your progress is saved automatically.

How to play Star Sudoku

1. Fill every row, column and box with each number once.
2. Tap a cell, then tap a number on the pad.
3. Turn on NOTES to pencil in ideas.
4. Hold a number key to lock it, then tap cells to fill them.
5. A wrong number costs a heart. You have 3 on every level.
6. Every full box lights a star in the sky.

Controls

Phone and tablet: tap, hold and swipe on the screen as shown in the game. Computer: use the mouse the same way (click for a tap, drag for a swipe).

1,000 levels and new mechanics

• Level 101+: Even and odd – A circle holds an even digit, a square an odd one.
• Level 201+: Diagonals – Both long diagonals hold 1 to 9 too.
• Level 301+: Arrows – The arrow points at the smaller digit.
• Level 401+: Thermometers – Digits rise from the bulb.
• Level 501+: Star cages – A cage adds up to its number, no digit twice.
• Level 601+: Pairs – Two rules on every level.

Power-ups

• Hint – Fills in the next number you could work out, and tells you why. First one free on every level, then watch a video.
• Auto notes – Pencils in every number each empty cell can still take. First one free on every level, then watch a video.

Features

• Free to play, no download and no sign-up
• Works on iPhone, iPad, Android and computers
• Progress saved automatically, also as a guest
• 1,000 levels, each checked to be solvable