Puzzle Den

Free Logic Puzzle Games Online

Pure logic puzzles such as Sudoku, Minesweeper, Nonogram, Lights Out and Pandoku. Every puzzle can be solved by reasoning, and many are generated to have exactly one solution.

9 free logic games to play now

Pandoku

Seat one panda in every row, every column and every colored area, and never let two pandas touch, not even diagonally. Bao the panda mascot guides you through your first puzzles.

Sudoku

Fill every row, column and 3ร—3 box with the numbers 1 to 9. Tap a square, then a number. Use notes for candidates, and watch your hearts: three mistakes and the puzzle is over.

Minesweeper

Dig safe squares and use the numbers to work out where mines hide. Flag the mines and clear every safe square to win.

Lights Out

Tapping a light flips it and its neighbors above, below, left and right. Switch every light off to finish each level.

Nonogram

The numbers beside each row and above each column show the runs of filled squares, in order. Fill in the right squares to reveal the picture.

Number Match

Cross out pairs of equal numbers, or numbers that add up to 10, when they sit next to each other. Clear the whole board.

Code Breaker

Guess the secret code of four colors. Black pegs mean right color and spot; white pegs mean right color, wrong spot.

Sun and Moon

Fill the grid with suns and moons so every row and column is balanced, with no three alike in a row.

Number Path

Draw a single path from 1 through every number in order, covering every square of the grid exactly once.

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Written and tested by Puzzle Den Editorial Team

Game design and testing. The Puzzle Den team designs, builds and play-tests every game on the site, and writes and reviews each guide. We check every level generator for solvability before a game goes live.

Published 30 September 2026 ยท Last updated 30 September 2026 ยท How we build and test games