Terms of Use

Mind Derby

The rules for playing Mind Derby and using its online features.

These terms of use (“terms”) apply to Mind Derby (“the game”) for Android and to its online features: accounts, the official Daily Derby, leaderboards, medals and the server at api.projectellus.com. The game is made by Projectellus Studio (“we”, “us”). By using the game you agree to these terms; you accept them again when you create an account. How we handle personal data is explained in our Privacy Policy.

1. Who can play

The game is made for players aged 12 and over and for adults. You can create an account only if you are at least 16 years old, and the birth year you give must be true. Younger players can use the parts of the game that need no account.

2. Your account

  • One person, one account: do not create extra accounts, for example to play the Daily Derby more than once a day.
  • Your account is personal: do not share, sell or transfer it, and keep your password secret. You are responsible for what happens with your account.
  • You need a confirmed e-mail address (or Google sign-in, where offered) to take part in the official Daily Derby and the leaderboards.
  • Tell us at [email protected] if you think someone else has used your account.

3. Nicknames

Your nickname is shown to other players. It must be 3–18 characters long, start with a letter or a digit and contain only letters, digits, spaces, dots, underscores and hyphens. Each nickname can be used by one account only, and you can change yours once a week.

Nicknames must not be offensive, hateful, sexual or discriminatory, must not contain other people’s personal data, and must not pretend to be someone else, including our staff (words such as “admin”, “moderator” or our studio name are not allowed). The game filters many unsuitable words automatically, but no filter is perfect: we may replace an unsuitable nickname with a neutral one (such as “Explorer12345”).

4. The official Daily Derby in short

  • Every day from midnight to midnight, Lithuanian time (Europe/Vilnius), there is one official Daily Derby with the same seven questions for everyone, shown in your language.
  • Each account has one attempt per day. The questions come one at a time and each has 25 seconds (30 for a question where things are put in order); an answer that reaches our server later (after a short allowance for the connection) counts as unanswered and scores zero. If you leave the game during the Derby, the question on the screen counts as unanswered; if you leave a second time, the attempt ends with the answers given so far. An attempt ends at midnight at the latest.
  • Every right answer gives three points (21 at most). There are no hints and no speed bonus, and an answer can not be changed once it is sent.
  • Points are calculated only by our server. Right and wrong answers stay hidden until the day is over; then the answers, explanations and sources open for review.

5. Leaderboards, medals and streaks

Official results form day, week (Monday to Sunday), month and season leaderboards that show the top 100. Players with the same score share a place (1, 1, 3); on the season leaderboard only when they also played on the same number of days.

When a day, week or month ends, its leaderboard becomes final and gold, silver and bronze medals go to the best three places, if enough players took part and each medal winner played on enough days in that period. These rules are fixed when a period starts and are shown in the game; a change applies only to later periods. Final standings are not edited afterwards.

The seasons are spring (March to May), summer (June to August), autumn (September to November) and winter (December to February). When a season ends, exactly one player becomes its Season Champion and gets a unique medal and title: the player with the most points in that season; with equal points, the one who played on more days; if that is equal too, the one who reached those points first. The season’s minimum number of players and of days played are shown in the game.

A streak counts the days in a row on which you played the official quiz. Medals, streaks, achievements and titles have no money value and can not be exchanged, sold or transferred.

6. Fair play

The official quiz is a test of what you know. You must not:

  • use bots, scripts, automation, modified versions of the game or any tool that answers for you;
  • share, publish or ask for the answers to the current day’s quiz before it ends at midnight, or look the answers up while playing;
  • play with more than one account, or let someone else play for you;
  • exploit bugs, attack, overload or try to get into our server or other players’ accounts, or try to read the questions or answers from the game or the server in any way other than playing;
  • harass other players or use the game for anything unlawful.

If you find a bug or a way to cheat, please tell us at [email protected] instead of using it.

7. Suspension and ending your account

If an account breaks these terms, we may reset its nickname or suspend it. A suspended account can not sign in or take part in the official quiz. We decide after a person has looked at the case, not automatically. If you think we have made a mistake, write to us at [email protected] and we will look at it again.

You can stop playing and delete your account at any time; see Delete your account.

8. Questions, facts and content

We check every official question against a source, but mistakes can happen. The game is entertainment and general knowledge, not professional, medical, legal or financial advice. If you think a question is wrong, please tell us at [email protected]. A corrected question is used in later quizzes; results already given are not changed.

The game, its questions, texts, art and code belong to us or our licensors. You may use the game for your own personal, non-commercial play. Do not copy, collect or publish the questions or answers, or copy, modify or resell the game.

9. Price and advertising

The game is free and has no in-app purchases. It shows a small ad banner in its menus and result screens, never while you answer questions. Ads never give an advantage in the official quiz or on the leaderboards. If we add other kinds of ads, we will update these terms and our privacy policy first.

10. Availability, changes and no warranty

We are a small independent studio and provide the game and its online features free of charge, “as is” and “as available”. They may sometimes be unavailable or contain errors, and we may change, pause or end features, the official quiz or the online service. If we ever close the online service, we will announce it in the game or on our website in advance where we can.

To the extent the law allows, we are not liable for indirect losses or for lost progress, results or medals. Nothing in these terms limits your rights as a consumer under the law of your country, or our liability where the law does not allow it to be limited.

11. Changes to these terms

We may update these terms, for example when the game gets new features. Important changes will be shown on this page and in the game before they take effect. If you do not agree with the new terms, you can stop using the game and delete your account.

12. Applicable law

These terms are governed by the law of the Republic of Lithuania. If you live in another country, you also keep the protection of the mandatory consumer laws of that country.

13. Contact

Projectellus Studio, Lithuania. E-mail: [email protected]