11 Free Online Logic Puzzles You Can Play Right Now (No Sign-Up)
Play 11 free logic puzzles online — Sudoku, X-Sudoku, Killer Sudoku, Calcudoku, Kakuro, Crossmath, Nonograms, Star Battle, Ripple Effect, Number Loop and Word Search. Live leaderboard, daily streaks, no ads in the way, no account.
If you came here to find a clean, free place to play logic puzzles in your browser — no app, no account, no pop-ups between every move — you are in the right place. PuzzlePage now has eleven free interactive puzzles you can play right now, each with a live leaderboard, a speed bonus, and a daily streak. This guide walks through every one, what it asks of you, and where to start.
📌 Key Takeaways
- PuzzlePage has 11 free logic puzzles: Sudoku, X-Sudoku, Killer Sudoku, Calcudoku, Kakuro, Crossmath, Nonograms, Star Battle, Ripple Effect, Number Loop and Word Search
- Every puzzle is free, plays in your browser, and needs no sign-up
- Each one has its own live leaderboard plus a combined all-time board, with bonus points for solving faster than par and keeping a daily streak
- Boards are generated fresh every time you play, so you never run out — and a featured Daily Challenge rotates to a new puzzle each day
- New to logic puzzles? Start with Sudoku or Nonograms on Easy, then branch out
Where to start if you are new
If you have never solved a logic puzzle by hand, begin with Sudoku — the rules are famous for a reason — or Nonograms, where number clues slowly reveal a hidden picture and the "aha" comes quickly. Both have an Easy setting that is genuinely gentle. Once those feel comfortable, the rest of the catalog opens up.
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The number-grid family
These all share Sudoku DNA: deduce, never guess, and every puzzle has exactly one solution.
Sudoku and X-Sudoku
Sudoku needs no introduction: fill the 9×9 grid so every row, column and 3×3 box holds 1–9. X-Sudoku (also called diagonal Sudoku) keeps all of that and adds one twist — the two long diagonals must also each contain 1–9. Those extra constraints are a gift: when a normal Sudoku stalls, the diagonals often hand you the next digit.
Killer Sudoku and Calcudoku
Killer Sudoku hides most of the starting digits and instead draws dotted "cages" with a small target sum. The cells in each cage must add to that sum with no repeated digit — so arithmetic becomes part of the deduction. Calcudoku (you may know it as KenKen or Mathdoku) drops the 3×3 boxes entirely: fill each row and column with 1–N, and make every cage hit its target using the shown operation (+, −, ×, ÷). It is the most "mathy" of the set and a brilliant warm-up for mental arithmetic.
Kakuro and Crossmath
Kakuro is a crossword built from numbers: fill each run of white cells with digits 1–9 that add up to the clue, never repeating a digit inside a run. Crossmath is the arithmetic crossword — place digits so every across and down equation is actually true. Both reward you for spotting the one cell that's pinned by two clues at once.
The shading-and-loop family
These break away from digits and feel completely different to solve.
Nonograms
Nonograms (Picross, Hanjie, griddlers) use row and column clues to tell you the runs of filled cells. Fill the right squares and a small piece of pixel art appears. The core trick — overlapping what a clue must cover from both ends — is one of the most satisfying moves in all of puzzling.
Star Battle
Star Battle (Two Not Touch) asks you to place stars so that every row, every column and every outlined region has exactly one — and no two stars ever touch, not even diagonally. It is pure spatial logic with almost no arithmetic, and it scales beautifully from a quick 6×6 to a meaty 10×10.
Ripple Effect
Ripple Effect (Hakyuu) fills each outlined room with the numbers 1 up to its size. The catch: if the same number appears twice in a row or column, the gap between them must be at least that number of cells. Small rooms anchor the board; the spacing rule ripples outward from there.
Number Loop
Number Loop (Slitherlink) is the connoisseur's pick. Draw a single closed loop along the grid lines so that each numbered cell touches exactly that many loop edges. No branches, no crossings — one continuous loop. It looks intimidating and solves like a dream once the corner tactics click.
How scoring and the leaderboard work
Every solve earns points. You get a base score for the difficulty, a speed bonus of up to ×2 for beating par time, and a streak multiplier of up to ×1.5 for playing on consecutive days. Each puzzle type has its own leaderboard, and there is a combined all-time board for bragging rights across the whole catalog. Today's rankings reset at midnight, so there is always a fresh race. You can play anonymously, but adding a display name when you submit a score is what puts you on the board.
Do I need to pay or sign up?
No. Every puzzle on the live puzzles page is free and works without an account. Signing in is optional and only exists to sync your streak across devices. If you would rather solve on paper, many of these also have free printable generators — for example the printable Sudoku generator and the word search maker produce a clean PDF with an answer key in seconds.
Ready to play? Open the live puzzles page, pick a board, and race the clock. The leaderboard is waiting.
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