Browser · Free · Updated 2026-07-25
Online Sudoku — free in your browser
Play online Sudoku without installing anything. A fresh Easy board is ready below; switch to daily Medium/Hard when you want a timed ritual.
Play now · easy
Tap a cell, then a number
Online Sudoku that respects your attention
A lot of “free online Sudoku” pages bury the board under popups, interstitial ads or forced accounts. Zeloku keeps the playing surface clean: you land, you place a digit, you stay. That is better for you — and it is the only ranking signal a new site can honestly improve (dwell time, not spammy backlinks).
Choose your online Sudoku path
- Easy Sudoku online — high-clue warm-ups
- Medium Sudoku online — daily sweet spot
- Hard Sudoku online — longer sessions
- Expert Sudoku online — low-clue boards
- Evil Sudoku — Web-Sudoku-style brutality
- Kids Sudoku online — 4×4 and 6×6
- Free Sudoku online 2026 — no-signup overview
Features of Zeloku online Sudoku
- Instant play on first paint — no blank loading screen
- Conflict highlighting when a digit breaks a row, column or box
- Unlimited “New puzzle” regeneration in the browser
- Daily set with four difficulties and a 7-day archive
- Step-by-step online Sudoku solver
- Printable PDFs when you want to leave the screen
FAQ
- What is online Sudoku?
- Online Sudoku is the classic 9×9 number puzzle played in a web browser instead of on paper. You fill empty cells so every row, column and 3×3 box contains digits 1–9 once.
- Is online Sudoku free on Zeloku?
- Yes. Every board — including daily sets, kids sizes, the solver and printables — is free. There is no premium wall and no account gate to start playing.
- Do I need to download an app?
- No. Online Sudoku on Zeloku is a website. Open the URL on any modern phone or computer and play. That also means no app-store updates and no notification spam.
- Can I play online Sudoku offline?
- The live board needs a browser session. For offline play, download a free printable PDF pack and solve with a pen.
- Online Sudoku vs paper Sudoku — which is better?
- Online is faster to start, erases cleanly, and can highlight conflicts. Paper is better for travel without a signal and for kids who prefer pencils. Zeloku supports both.