Free online logic games
Nine puzzles. One personal Notebook.
Two ways to play
Browse all 9 puzzles ↓Choose how you want to play
Deduce from clues
Use what the board tells you to decide what belongs in each cell.
Plan a route
Think ahead: where can you move now, and what will still be possible next?
Explore patterns
Change the board and work out how each move affects what comes next.
Find your first puzzle
Want to understand a move? Start with Nonograms: its explanations show why a cell can be filled or crossed out. The illustrated rules introduce the clues. Or learn Binairo with worked 0-and-1 examples.
Enjoy thinking several moves ahead? Try Sokoban for box placement or Knight’s Tour for route choices. Both let you undo moves. See the illustrated Knight’s Tour strategy and 5×5 solution.
Prefer changing the whole board? Try Lights Out. A press affects neighbouring cells, and the worked light-chasing example shows how to work through the rows.
Your games connect
Free play and Notebook paths share the same achievements and records. Progress is saved in this browser without an account. Your brain map tracks game achievements, not your IQ.
Before you play
Do I need an account or a download?
No. Open a game page and play in your browser, on a phone, tablet or computer. The collection is free to play and currently has no ads.
Do all games explain their hints?
No. Nonograms explains supported deductions. Other games offer different kinds of help, such as undo or a suggested move. Sudoku hints preview and explain a logical single before you choose Apply or Cancel.
Can every puzzle be solved without guessing?
Not every generated board guarantees that. Minesweeper may need guesses later, although the first click and its neighbours are safe. Sudoku difficulty settings are not a rating of the logical techniques required.