Frequently Asked Questions

Logic Puzzles CA is a free online collection of beautifully crafted logic puzzles and brain games. We offer over 30 different puzzle types that you can play directly in your browser — no downloads required.

Yes! All of our browser-based puzzles are completely free to play. We also offer mobile apps on iOS and Android, some of which include optional in-app purchases for extra content.

No account is needed. You can start playing any puzzle immediately. Your progress is saved locally in your browser.

Our puzzles work on any modern browser including Chrome, Firefox, Safari, and Edge — on desktop, tablet, and mobile. For the best experience, we recommend using an up-to-date browser.

Just pick a puzzle from our games page and click "Play." Each puzzle includes a brief tutorial or rule explanation to get you started. No sign-up or setup required.

Yes! Most of our puzzles offer multiple difficulty levels, from beginner-friendly to expert. You can choose your preferred difficulty before starting a new puzzle.

Our browser puzzles require an internet connection to load. However, our mobile apps (available on iOS and Android) support offline play once downloaded.

We offer a wide variety including Crowns, Nonograms, KenKen, Sudoku, Aquarium, Minesweeper, Tents & Trees, Battleships, Futoshiki, Nurikabe, and many more. Check out our full collection on the Logic Games page.

Yes. Crowns is inspired by the classic N-Queens problem. You place exactly one crown per row, column, and colored region, with the added constraint that crowns cannot be adjacent — even diagonally. Every puzzle has a unique solution reachable through pure logic.

Each row and column has a set of numbers indicating groups of consecutive filled cells. For example, a clue of "3 1" means there is a group of 3 filled cells, then at least one empty cell, then 1 filled cell. Use these clues to deduce which cells to fill.

KenKen is played on a grid where you fill each row and column with unique numbers (like Sudoku). The grid is divided into cages with a target number and math operation (+, −, ×, ÷). The numbers in each cage must combine using that operation to equal the target.

In Aquarium, you fill cells with water. Water obeys gravity — if a cell is filled, all cells below it in the same aquarium region must also be filled. Row and column clues tell you exactly how many cells should be filled in each line.

No. Every puzzle on Logic Puzzles CA has a unique solution that can be reached through logical deduction alone. If you find yourself guessing, there is always a logical step you have not yet discovered.

Yes! We offer printable versions of several popular puzzles including Crowns, Sudoku, Nonograms, KenKen, Aquarium, Binary Sudoku+, and Tents & Trees. Visit our printable puzzles section to download and print.

Printable puzzles are generated as printer-friendly pages that you can print directly from your browser. They are formatted to fit standard letter-size paper.

Yes! We have apps available for both iOS and Android. Our apps include Crowns, Aquarium, Binary Sudoku+, Palette Path, Dot Stream, and Daily Logic Puzzles. Visit our Apps page for download links.

Our apps are free to download and play. Some apps offer optional in-app purchases to remove ads or unlock additional puzzle packs.

Yes, your progress is saved automatically in your browser's local storage. Note that clearing your browser data will reset your progress. In our mobile apps, progress is saved to your device.

We'd love to hear from you! Please visit our Contact page or email us at [email protected]. You can also join our Discord community to chat with us directly.

Try refreshing the page or clearing your browser cache. Make sure you are using a modern, up-to-date browser. If the issue persists, please contact us and include which puzzle and browser you are using.