Rules of the Knowledge Arena

Operator

Kirelden is the customer-facing brand of a sole proprietorship established in Türkiye.

The service

Kirelden serves four-choice trivia questions, checks answers on the server, and awards points for correctness and response speed. The first Daily Quiz attempt is ranking-eligible; replays are practice. Category quizzes and public leaderboards may appear as they become available.

Fair play

Do not automate answers, scrape unrevealed content, tamper with timing, rotate credentials to obtain extra ranking entries, exploit errors, interfere with another player or bypass security controls. Kirelden may remove ineligible scores or restrict abusive access.

Question quality

Active questions include a source and verification date, but sources and real-world facts can change or contain errors. Explanations are educational context, not professional advice. Report a suspected problem to support.

Scores and rankings

A score reflects performance on a particular question set under Kirelden’s current rules. It is not a measure of intelligence or personal worth. Rankings and percentiles will only be shown when supported by real data and appropriate sample quality; no placement or availability is guaranteed.

Private challenge links

Share challenge links only with intended recipients. A valid link can start one opponent attempt and may expire or be revoked. Do not publish another player’s private result or access material without permission.

Availability and changes

Kirelden may correct, deactivate or replace questions; change schedules; limit abusive traffic; or interrupt features for maintenance, security or legal reasons. Material legal changes will be published here.

Kirelden Pro

Core competitive gameplay remains free. When purchases are available, Kirelden Pro costs $4.99 USD as a one-time purchase for account-based Pro analytics: category accuracy, performance history and insights based on recorded quizzes. It does not buy points, XP, rating, easier questions or leaderboard advantages. There is no subscription, recurring fee or automatic renewal.

Delivery and lifetime access

Gumroad handles checkout and payment. Pro unlocks in the purchasing Kirelden account after successful server-side purchase verification, not merely on returning from checkout. Availability is limited to jurisdictions where Gumroad offers the transaction and Kirelden can lawfully provide the service; universal availability is not promised.

Lifetime means no time-based entitlement expiration while the relevant Kirelden service and account remain available. It is not a promise that the service will operate forever. Deleting the account permanently removes its Pro access; access is not automatically transferred to a new or different account. A refund, chargeback or valid revocation may remove access. Fraud or abuse may lead to account restrictions in accordance with applicable law and these terms.

Refunds and support

The Gumroad product is configured with no voluntary refunds. This does not exclude or limit mandatory consumer rights under applicable law, including any applicable withdrawal rights or remedies for non-delivery or a defective service. Digital delivery alone does not waive those rights. Signed-in users can submit purchase, delivery or refund requests through Help / Support and read replies there. Gumroad may also handle refund and payment disputes through its applicable processes.

Eligibility

Knowledge Arena is a general-audience trivia service, not an adult-content service. It is not offered to children under 13. Where applicable law requires parental or guardian permission for your use, that permission is required. To purchase Pro, you must be of legal age and have capacity to enter a binding contract under applicable law and meet Gumroad’s eligibility requirements. Checkout requires your acknowledgement of this capacity; Kirelden does not verify identity or date of birth.

Contact

When signed in, use Help / Support to submit and follow your request. This is asynchronous in-app support, not email, live chat or 24/7 support. Do not send cookies, challenge secrets or authentication credentials.

Updated 6 October 2026.