Play Mode

cZeus puzzles can be played in two modes :


In this mode, as a player fills in the mystery number tiles, the App will accept or reject each entry, depending on whether the number is correct or incorrect. Alternatively, the user can pencil-in an entry and later confirm it by pressing the middle button on the number wheel.

Scores in Sprint mode are calculated at every single entry of a mystery number. Scores are based on the points earned, use of hints, and speed and accuracy:

Points are given based on:
  1. the correct entry of mystery numbers.
  2. penalty negative points for rejected entries.
  3. a time bonus. The time bonus depends on the speed of entry of each correct mystery number, and the puzzle complexity.
  4. a cZeus square bonus for completing the cZeus square within the first few seconds.
  5. using a direct hint for mystery numbers reduces more points than using hints for getting new clues.
  6. finally a substantial "cZeused" bonus is awarded for a cZeused puzzle, i.e. solving a complete puzzle without any errors is greatly advantageous.


In this mode, the player needs to fill all the mystery number tiles and can only then press the middle button on the number wheel. If the entries are not correct, the player is given the option to go back and have two more attempts at completing the puzzle.

In Marathon mode scores are given after submitting the completed solution by pressing the middle button on the number wheel.

The player can submit a completed solution three times, but can only cZeus it in the first attempt.
  1. Points are given for each correct mystery number.
  2. The time bonus depends on the puzzle complexity and the speed of its completion.
  3. Finally a substantial "cZeused" bonus is awarded for a cZeused puzzle, i.e. solving a Marathon puzzle on the first try is greatly advantageous.

As a player completes a puzzle, the score given indicates how well the puzzle was played, irrespective of whether it was cZeused or not. Generally the given score depends on the complexity of a puzzle, the speed of entry and the accuracy. The scores for Sprint and Marathon modes are calculated slightly differently.

Currently, Competitions can only be played in Sprint mode.

cZeus Community

cZeus Community is made for everyone

A separate community dedicated for schools

cZeus Community is the area where you can find friends and teams, and enrol in competitions.


In this tab, you can find your friends, add or remove friends and invite your friends to cZeus. Also, you can look at your friends' profiles and their stats summaries.
cZeus Friends


In this tab, you are able to find yours, your friends' and some other suggested teams. If you are not part of a team, you can join a team from here. You can see other teams' profiles too with their stats summaries. You can also search for any teams you require.
cZeus teams


In this tab, you are able to join individual competitions, enrol your team in competitions, view competitions’ profiles with their stats summaries, and see your finished competitions’ histories. You can also search for any competition you require.
cZeus competitions


You are required to be a member of a team to play in any team competitions.

A team can be created anytime in the cZeus Community section or Profile--> Captain section in the app (or on cZeus School League Portal by teachers).

You can invite team members by forwarding the team password or sending an invite through cZeus Community or via email.

Team members can play in any available team competitions and build their team’s score. Team’s score is the sum of all the scores achieved by a team in all the classes in all competitions including weekly team challenges.

You can dissolve a team only when you do not have any team members.

Team Captain:

cZeus Team CaptainA person who has created a team is the captain of that team. You can be a captain of many teams at the same time. As a captain, you are able to add new members, remove any members and enrol your team to various public and private competitions.


cZeus Competitions are categorised into team competitions and individual competitions. You can play alone in an individual competition but you will require a team to play in any team competitions. There are three types of competitions:

Weekly Challenges

Weekly Challenges are competitions that run for a week. You can play Weekly Team Challenges every week without enrolling as long as your team has a minimum of 3 members. If your team drops below 3 members, you will not be able to play these until you have at least 3 members in your team again.

The score for a team in a weekly team challenge is calculated by taking the average of the top three scores of the team members in each competition.
Weekly Challenges

Public Competitions

Public competitions are open to all. The competition period is determined by the sponsor or the cZeus admin.

Individual-Public-Competitions - Individuals have to enrol in the cZeus Community or tournaments to play these.

Teams-Public-Competitions - Only the team captains can enrol their team in such competitions.   The minimum number of members in a team is set to 3 by default, but it could vary. For any reason if the number of members in a team drops below the minimum number, that team will not be able to enrol in any other competitions.   Scores for a team is calculated by taking the average of their top 'N' players where 'N' is the minimum number of required team members.
Public Competitions

Private Competitions

Private Competitions could be individual or team competitions. Similarly to public team competitions, private team competitions have a required minimum number of members in a team and the team score is calculated in the same manner.   These competitions could be:

Closed Competitions - Captain could invite any players, but other players are only able to participate if their request to play is accepted.

Open Competitions - This is available to anyone.
Private Competitions

Competition Captain:

The player who has created a competition is the captain of that competition.
Competition Captain


cZeus helps users to measure their performance in various forms of analysis such as speed, proficiency, points scored and accuracy.


This is calculated based on how fast the correct entries are made.

cZeus Speed


This is calculated based on how many correct entries are made without direct hints and errors regardless of speed.
cZeus Accuracy


This is calculated based on how accurately harder puzzles are solved in shorter time than allocated.

cZeus Proficiency


Points are given based on speed, number of errors, and use of hints. Extra bonuses are given for making no errors, and for identifying the cZeus Square within 20-30 sec.

cZeus Points

Each of these statistics for various competitions and training packs can be viewed as a graph and can be compared to the corresponding statistics of All (players), teams, best records and friends of your choice.

cZeus apps are Kids' Friendly

cZeus Puzzle apps take children’s safety very seriously. Therefore, to support the online safety of children, the following steps have been taken:

  • No messaging facility is available in the cZeus app which helps to makes cZeus Community safe from bullies, sexting and any other vulnerabilities that could otherwise undermine children’s safety.
  • There are no photo sharing facilities, safeguarding children from various vulnerabilities.
  • No location sharing option is available, other than the name of the country, thus no one can know where other players are located at any time.
  • Adverts in the cZeus Maths Challenger are suitable for any age, including under 13’s .
  • The nickname facility ensures a child stays anonymous, allowing him/her to protect their identity.
  • We do not collect any personal information from a user apart from his/her email address in some cases, but we make sure it is never provided to any 3rd parties.
  • There is no explicit content in the app that may be disturbing to a child.
  • The app can be played fully without buying any in-app purchases.
  • We do not collect any personal data from a user device.
  • We do not collect phone numbers of users (even for Facebook users in the cZeus Maths Challenger app).


cZeus Captain facility is great for teachers or anyone who likes to encourage a group(s) of people to regularly practice maths via a fun/social puzzle. Be a cZeus Captain and enjoy the benefits of having your own teams and competitions. Easily create teams and competitions on the cZeus App (or on cZeus School League Portal by teachers) and monitor/compare their performance in a variety of competitions, from weekly challenges to public and private competitions. Or just simply create individual competitions and invite others to join. Captains are not obliged to participate in any competitions or join a team but could do so, if they wish.

A concise guide for captains

You can manage your teams and competitions fully through the app without registering with us.

Download on App Store

cZeus apps are now available on various platforms.

cZeus Maths Challenger

cZeus Planet

cZeus School League


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