Help identify a mistake
An explanation or game may contain an error despite checks. Use the contact form to describe a suspected issue and the page where it occurs. A specific example helps distinguish an error from a different rule variant. The contact form is available for questions.
Understanding educational practice
For a clear understanding of the site: A score in a card-rules exercise is not an educational certificate or a professional assessment. Use the explanations as practice material. Different activities may measure different parts of the task. Read a destination’s own information before using it.
About information on linked websites
For a clear understanding of the site: An external link does not guarantee the accuracy, safety or availability of its destination. Other services publish their own terms and information. Check the destination before sharing personal information or relying on a claim. Read a destination’s own information before using it.
Available rounds and stored card games
For a clear understanding of the site: Some activities reuse a fixed collection of puzzles or levels. A new round does not necessarily provide a board you have never seen. The game’s description gives the relevant collection or format details. Use a clear example when reporting an error.
Rules can differ between versions
Keep this limit in mind when playing. The Guide describes the format available here, including any small board, limited stage set or house rule. Other versions of a game may work differently. Judge a move against the rules displayed for that activity. Results should be understood in the context of the game.
About game speed and responsiveness
Please note this distinction. Animations and timing can be affected by device speed, browser behaviour and background activity. Scores from different devices may not be directly comparable. Close unrelated busy tabs when a timing-sensitive game feels uneven. Read a destination’s own information before using it.
About availability and saved information
Before relying on a result or explanation, remember: Access may be interrupted, and local saved progress may be lost when browser storage is removed. Keep these limits in mind when beginning a long round. There is no promise of uninterrupted access or cloud recovery of local records. The contact form is available for questions.
Interpreting memory and reaction scores
Before relying on a result or explanation, remember: Card exercises support informal practice, not medical assessment or professional certification. A score records answers in one session, not an assessment of health or aptitude. Take a break when a round stops being enjoyable.
Game names and independent publishing
For a clear understanding of the site: The site is an independent collection of browser card games and explanations. It is not an official Yono app or an account-support service for another publisher. A familiar game name does not make this an official brand service. Read a destination’s own information before using it.
Games for leisure
Please note this distinction. Scores, puzzle results and practice rounds are for recreation. They are not earnings, investments or redeemable rewards. There are no cash stakes or prize withdrawals in these games. Read a destination’s own information before using it.