About Mobixify Play

Who builds Mobixify Play

Mobixify Play is made by Mobixify LTD, a software company in the United Kingdom that also builds apps and online tools. You can read more on the company page. Every game here is designed and built by Mobixify, and runs in your browser on this site and in the Mobixify Play app.

Why we built it

We wanted a place where a good game is one tap away: no account to create, no download to wait for, and nothing standing between you and the first move.

How the games are kept fair

The rules of each game are written apart from what is drawn on the screen, and that code has automated tests. Where a game can promise something about its puzzles, a program checks it:

• Card deals. In Klondike, FreeCell and one-suit Spider Solitaire a solver checks that a deal can be won. Spider with two or four suits is not checked, and the game says so.
• Mahjong and Trio Stack. Mahjong Solitaire boards are dealt by playing the board backwards, so a solution exists. Trio Stack levels are built together with a way to clear them.
• Sudoku and Nonogram. Each Sudoku has exactly one solution, and a line solver proves the same for each Nonogram picture.
• Echo Sweep. A deduction engine solves each board from the numbers a player can see, so it can be finished without guessing.

A daily challenge is one puzzle, deal or round that is the same for everyone on that day. The day changes at midnight UTC, and some games set the level by the weekday. See the daily games page.

Hints are meant to teach. In Sudoku, Nonogram and Echo Sweep a hint lights up the cells that matter, names the step and explains why it follows. A puzzle solved with a hint does not set a best time.

Your progress stays on your device

You do not need an account, and the games do not ask for your name. Progress, settings, favourites and daily results are saved in your browser's storage as you play, so you can close a tab and come back. They are not sent to us, and you can delete your progress from your profile.

How we test before a release

Before a release we run the automated tests of the game rules, a type check, a check that every text exists in every language, and the size limit of each game's download. Browser checks then open the real games in each language at phone and tablet sizes, in portrait and landscape. They measure clipped text, overlapping or off-screen buttons and touch targets smaller than 44 pixels, drive the games with real mouse and touch input, and check that page zoom stays available and that "Play again" starts exactly one new game.

Automated checks cannot find every problem. If something looks or works wrong for you, please tell us.

Languages

The site and the games are available in twenty languages, including Arabic and Urdu, which are written from right to left and have mirrored layouts. Some phrases may read less naturally than a native writer would put them; tell us on the contact page and we will fix them. Word Search has its own word lists for each language.

Privacy

The website uses analytics to see how it is used, and a short note on your first visit tells you about it. The Privacy Policy and the Cookies page explain what is collected and how to switch analytics off.

Contact and feedback

Questions, bug reports and ideas are welcome at info@mobixify.com, or see the contact page. Please name the game, your device and what happened. Our team reads what you send: bug reports help us find faults, and ideas help us decide what to improve.