Sudoku Vault

Click Play to start instantly — use keyboard, mouse, or touch controls. Check in-game instructions for moves.

Sudoku Vault is a logic-based puzzle game featuring 4x4, 6x6, and 9x9 boards — each with four difficulty levels: Basic, Normal, Hard, and Expert. Whether youre 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 — it will remove incorrect inputs and lock the correct ones, helping you stay focused on the solution. With clean design and intuitive controls, Sudoku Vault is the perfect blend of relaxation and brain training.

As an editor who's spent considerable time with Sudoku Vault, I'm impressed by how it balances accessibility with depth. The range of grid sizes and difficulty levels means there's always a fresh puzzle to conquer, whether you're easing in with a 4x4 grid or pushing your limits on Expert 9x9 boards. Features like the NOTES system and CHECK button are thoughtfully implemented—they don't solve the puzzles for you but provide just enough support to keep frustration at bay and learning on track. The minimalist design enhances focus, making each session feel like a rewarding brain teaser rather than a chore. For anyone seeking a well-crafted free Sudoku Vault game, this stands out for its intuitive gameplay and ability to turn idle time into productive mental exercise. It's a solid choice that consistently delivers that 'aha' moment when the numbers fall into place.