What is Sudoku Vault?
Sudoku Vault is a free puzzle game with educational, board and challenge elements that you can play online in your web browser on Gameziko. It needs no download, no install and no account. Sudoku Vault is a logic-based puzzle game featuring 4x4, 6x6, and 9x9 boards â each with four difficulty levels: Basic, Normal, Hard, and Expert.
How to play Sudoku Vault
- Press "Play now" on the game screen. Sudoku Vault loads inside the player; some games take up to 20 seconds and may show a short ad first.
- Use a mouse or touchpad to select a cell, then choose a number from the on-screen number pad to fill it in.
- Use the Note button to toggle pencil marks, and tap Check to validate your entries â incorrect numbers are removed, and correct ones are locked.
- Use the full-screen button at the bottom right of the player for a bigger view, and press Esc to leave full screen.
Game details
| Category | Puzzle |
|---|---|
| Tags | Educational, board, challenge |
| Controls | Mouse, Touch (tap or swipe) |
| Screen | Portrait (450 Ã 600) |
| Price | Free |
| Download or sign-up | Not needed |
| Distributed by | GameDistribution |
| Added to Gameziko | 30 September 2026 |
Description from the developer
Sudoku Vault is a logic-based puzzle game featuring 4x4, 6x6, and 9x9 boards â each with four difficulty levels: Basic, Normal, Hard, and Expert. Whether you're a beginner or an expert, every grid offers a fresh challenge for your mind. Use smart NOTES to keep track of possibilities, and when you want to check your progress, tap the CHECK button â it will remove incorrect inputs and lock the correct ones, helping you stay focused on the solution.
Sudoku Vault: frequently asked questions
Is Sudoku Vault free to play?
Yes. Sudoku Vault is free to play on Gameziko, with no download and no account needed. Like most free web games, it is funded by ads, so it may show a short ad before or between rounds.
What are the controls in Sudoku Vault?
The developer's instructions for Sudoku Vault say: "Use a mouse or touchpad to select a cell, then choose a number from the on-screen number pad to fill it in. Use the Note button to toggle pencil marks, and tap Check to validate your entries â incorrect numbers are removed, and correct ones are locked."
Can I play Sudoku Vault on a phone or tablet?
Yes. Sudoku Vault supports touch controls, so it works in the browser on Android phones, iPhones and tablets as well as on a computer.
What games are similar to Sudoku Vault?
If you like Sudoku Vault, try Classic Nonogram, Master Sudoku and Unite Words. They are puzzle games with similar themes, and you can find more in the Puzzle category on Gameziko.
Related guides
- How to Play Sudoku: Rules and Solving Techniques: Learn sudoku's one rule and the solving techniques that crack easy to hard puzzles: scanning, naked and hidden singles, pencil marks and pairs.
- 6 Best Free Puzzle Games to Play in Your Browser: Six free puzzle games to play online with no download, from 2048 and water sort to jigsaws, Minesweeper and sliding blocks, and who each one suits.
Good to know
Sudoku Vault is made by an independent developer and delivered by GameDistribution, so Gameziko cannot change the game or recover lost progress. Any progress the game saves is kept in your browser on this device. If the game does not start, wait up to 20 seconds, allow ads for gameziko.com and try again, or report the game.