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Terms of Service

Effective date: 2026-09-15

These terms set out the conditions for using Yunnori (윷놀이), the mobile game and related website provided by Greeker Labs LLC ("we", "us") (the "Service"). They are modelled on the Korea Fair Trade Commission’s standard terms for mobile games.

Where the Korean and English versions conflict, the Korean version governs.

Contents

  • Article 1 (Purpose)
  • Article 2 (Definitions)
  • Article 3 (Company information)
  • Article 4 (Effect of and changes to these terms)
  • Article 5 (Matters not covered)
  • Article 6 (Eligibility)
  • Article 7 (Accounts)
  • Article 8 (Usernames)
  • Article 9 (Privacy)
  • Article 10 (Our obligations)
  • Article 11 (Your obligations and prohibited conduct)
  • Article 12 (Providing and changing the Service)
  • Article 13 (Interruptions)
  • Article 14 (Ads and notifications)
  • Article 15 (Virtual currency: geon)
  • Article 16 (Membership subscriptions)
  • Article 17 (Right of withdrawal)
  • Article 18 (Cancelling purchases by minors)
  • Article 19 (Refunds)
  • Article 20 (Intellectual property)
  • Article 21 (Restrictions on use)
  • Article 22 (Termination and account deletion)
  • Article 23 (Liability)
  • Article 24 (Limits on our liability)
  • Article 25 (Notices)
  • Article 26 (Resolving disputes)
  • Article 27 (Governing law and jurisdiction)
  • Addendum

Article 1 (Purpose)

These terms set out the rights, obligations and responsibilities between us and you in using the Service, and other necessary matters.

Article 2 (Definitions)

  1. "User" means a person who agrees to these terms and uses the Service.
  2. "Account" means the identity created when you first launch the app (including an anonymous account).
  3. "Username" means the unique name you choose, shown to other players in online rooms.
  4. "Geon" means the virtual currency earned and spent inside the game.
  5. "Membership" means the auto-renewing paid subscription bought through an app store.
  6. "App store" means the Apple App Store and Google Play.

Article 3 (Company information)

We show our company name (Greeker Labs LLC), address (30 N Gould St Ste N, Sheridan, Wyoming 82801, USA), email (contact@greekerlabs.com) and D-U-N-S number (14-507-3841) in the website footer and on the Support page. We are a US company and are not registered as a business in Korea.

Article 4 (Effect of and changes to these terms)

  1. These terms are posted on the in-app terms screen and on the website, and take effect when you accept them. We record the version you accepted and when.
  2. We may change these terms within the limits of the law. We announce the effective date and reasons in the app and on the website at least 7 days in advance, and changes that are disadvantageous to you at least 30 days in advance, with an individual in-app notice.
  3. If you do not agree to changed terms, you can stop using the Service and delete your account. For disadvantageous changes we ask for your consent again.

Article 5 (Matters not covered)

Anything not covered by these terms follows applicable law, including Korea’s Act on Consumer Protection in Electronic Commerce, Act on the Regulation of Terms and Conditions, Game Industry Promotion Act and Content Industry Promotion Act, and the app stores’ policies.

Article 6 (Eligibility)

  1. The Service is for people aged 14 and over. On first launch we check age using birth year and month; anyone under 14 cannot use the Service.
  2. Minors (under 19 in Korea, or under the age of majority where you live) need a legal guardian’s consent to make purchases.
  3. Anyone permanently restricted under these terms may not sign up again.

Article 7 (Accounts)

  1. An anonymous account is created when you first launch the app. You may optionally link a Google, Apple, Game Center (iOS) or Google Play Games (Android) account.
  2. An anonymous account cannot be recovered if you delete the app or change devices. To keep your progress, geon, items and membership perks, we recommend linking a sign-in.
  3. You are responsible for your device and linked accounts, and you may not transfer, lend or sell your account.

Article 8 (Usernames)

  1. Usernames must be unique and are shown to other players in the same room.
  2. You may not use a username that impersonates someone, contains profanity, hate or sexual content, personal information (such as a real name or phone number) or advertising, or could be mistaken for staff.
  3. We may ask you to change a username that breaks these rules after notice, or reset it immediately in urgent cases.

Article 9 (Privacy)

We protect your personal information under applicable law, as described in the Privacy Policy.

Article 10 (Our obligations)

  1. We follow the law and these terms and work to provide the Service reliably.
  2. We handle legitimate feedback and complaints, and tell you why and when if it will take time.
  3. We do not rig game results: stick throws use unbiased random numbers, generated on our servers in online games. Paid products never affect who wins.

Article 11 (Your obligations and prohibited conduct)

You must not:

  • use someone else’s account or personal information, or impersonate us or our staff;
  • use hacks, bots, macros or unauthorised programs, modify or reverse-engineer the app, attack our servers, or otherwise disrupt the Service;
  • exploit bugs or errors to obtain geon or items unfairly (please report them to us);
  • exchange, sell or rent accounts, geon or items for cash or anything of value;
  • deliberately abandon games, collude, or otherwise disrupt other players’ games;
  • use usernames or reactions to harass, spread hate or sexual content, promote gambling, or act against public order and morals;
  • infringe our or anyone else’s copyright or other intellectual property;
  • break any other applicable law.

If a player behaves inappropriately, in an online room, tap the other player and choose Report player or Block player. Once blocked, that player’s reactions are no longer shown to you.

Article 12 (Providing and changing the Service)

  1. The Service includes vs-AI play, pass-and-play (2–4 players on one device), online rooms joined by room code (2–4 players) and a fixed set of emoji reactions (no free-text chat).
  2. We may change the Service for operational or technical reasons. Changes that are disadvantageous or significant are announced in advance under Article 4.

Article 13 (Interruptions)

  1. We may interrupt the Service temporarily for maintenance, cloud outages, natural disasters or similar unavoidable reasons, and give notice in advance where possible.
  2. If we shut down the Service entirely, we announce it in the app at least 30 days before the end date. For memberships with time remaining, we arrange refunds for the unused period under applicable law and app store policies.
  3. If an interruption caused intentionally or negligently by us harms you, we compensate you under Article 23.

Article 14 (Ads and notifications)

  1. The Service shows Google AdMob banner, interstitial and rewarded ads. Rewarded ads play only when you choose to watch them.
  2. Personalised ads are shown only to adults who consent; users under 18 see only non-personalised ads. You can change ad consent in Settings.
  3. We send marketing notifications only if you opt in separately, and never between 21:00 and 08:00. Opt out anytime in Settings → Notifications.

Article 15 (Virtual currency: geon)

  1. Geon is virtual currency earned only inside the game through play, streaks and rewards. It has no cash value. Geon cannot currently be bought with money.
  2. Geon cannot be refunded, exchanged for cash, or transferred to another user.
  3. If you delete your account, your geon and anything obtained with it are lost and cannot be restored.
  4. We may adjust how geon is earned and spent for game-balance reasons; disadvantageous adjustments are announced in advance under Article 4.
  5. Geon obtained through bugs or prohibited conduct may be removed.

Article 16 (Membership subscriptions)

  1. Membership is a monthly or yearly auto-renewing subscription that gives you ad-free play and extra geon earned in online matches. Membership never affects who wins.
  2. The price, billing period and perks are shown in the app and on the app store payment sheet before you buy, and payment is charged to your app store account. We never receive your card or payment details.
  3. Subscriptions renew automatically until cancelled. To stop the next renewal, cancel at least 24 hours before the current period ends in your App Store subscription settings or Google Play subscription settings. Perks continue until the end of the period you already paid for.
  4. Deleting the app or your account does not cancel an app store subscription.
  5. If the subscription price changes, we give notice and obtain consent where required, following the app store’s policy.
  6. On a new device or after reinstalling, restore your membership with Profile → Restore purchases.

Article 17 (Right of withdrawal)

  1. You may withdraw from a purchase within 7 days of buying it.
  2. However, for digital content that starts immediately, such as membership, withdrawal may be restricted once use has started (for example, ads have been removed or extra geon has been earned) under Article 17(2) of Korea’s Act on Consumer Protection in Electronic Commerce. We clearly disclose this before purchase. For divisible content, you may withdraw from the part not yet provided.
  3. If what you received differs from how it was described or advertised, or from the contract, you may withdraw within 3 months of receiving it, and within 30 days of when you learned or could have learned of this.
  4. Because the app stores process payments, request withdrawals and refunds through Apple’s Report a Problem or the refund option in your Google Play order history. If you have trouble with the store’s process, email contact@greekerlabs.com and we will help.

Article 18 (Cancelling purchases by minors)

  1. If a minor makes a purchase without a legal guardian’s consent, the minor or the guardian may cancel the contract under Article 5 of the Korean Civil Act.
  2. Cancellation may be limited if the purchase was within money the guardian allowed the minor to spend freely (such as pocket money), or if the minor tricked us into believing they were an adult or had consent (Civil Act Articles 6 and 17).
  3. To cancel, email contact@greekerlabs.com with the username, order number and proof of guardianship. We will work with the app store to process it.

Article 19 (Refunds)

  1. Refunds follow the app store’s refund policy and process. When an app store refunds a purchase, we remove the related membership perks.
  2. If you were overcharged, we arrange a refund through the app store and bear the cost of the refund unless the overcharge was not our fault.

Article 20 (Intellectual property)

  1. Rights in the Service’s content, including design, graphics, sound and code, belong to us or the rightful owners. Open-source licences used in the app are listed in its attributions.
  2. You may not copy, distribute, sell or make derivative works from Service content without our prior consent. The traditional game of Yut Nori itself belongs to no one.

Article 21 (Restrictions on use)

  1. If you breach Article 11, we may, depending on how serious it is, give a warning, reset your username, restrict online features or suspend your account.
  2. We tell you the reason and duration in the app or by email; in urgent cases we may tell you after acting.
  3. If you disagree, you can object by emailing contact@greekerlabs.com within 14 days of the notice. We will review it and tell you the result, and lift the restriction immediately if your objection is justified.

Article 22 (Termination and account deletion)

  1. You can end this agreement at any time by deleting your account in Profile → Data & Account → Delete account. If you cannot use the app, request deletion by email as described on the account deletion page; we complete it within 14 days.
  2. Deleting your account removes your game records, geon, items and membership perks. Information kept by law is handled as described in the Privacy Policy.
  3. Cancel any active subscription in the app store before deleting your account.
  4. If you seriously or repeatedly breach Article 11, we may end this agreement after telling you why and giving you a chance to explain.

Article 23 (Liability)

  1. If we or you breach these terms and cause the other harm, the party in breach must compensate for it, unless it acted without intent or negligence.
  2. Where a partner service is provided with us and you agreed to that partner’s terms, the partner is responsible for harm arising from its service.

Article 24 (Limits on our liability)

  1. We are not liable when we cannot provide the Service because of natural disasters or equivalent force majeure.
  2. We are not liable for problems or harm caused by you, such as failing to secure your device or deleting the app while using an anonymous account.
  3. For parts of the Service you use free of charge, we are not liable unless the law specifically provides otherwise.
  4. Paragraphs 1 to 3 do not apply to harm caused by our intentional misconduct or gross negligence (Article 7, Korean Act on the Regulation of Terms and Conditions).

Article 25 (Notices)

  1. When we need to notify you individually, we use in-app notifications, the mailbox, or an email address you have given us.
  2. For notices to all users, posting in the app and on the website for at least 7 days may replace individual notice, except for matters that significantly affect you, which we notify individually.
  3. You can notify us at contact@greekerlabs.com.

Article 26 (Resolving disputes)

  1. To handle complaints quickly, we take enquiries at contact@greekerlabs.com and run a Support page.
  2. If a dispute arises, you can apply for mediation to Korea’s Content Dispute Mediation Committee.

Article 27 (Governing law and jurisdiction)

  1. If you live in Korea, Korean law governs and lawsuits go to the court with jurisdiction under the Korean Civil Procedure Act.
  2. Otherwise, the laws of the State of Wyoming, USA govern, excluding conflict-of-law rules. This does not override mandatory consumer protections under the laws of the country where you live.

Addendum

These terms are effective from 2026-09-15.

SupportAccount deletionPrivacyTerms
Company
Greeker Labs LLC
Address
30 N Gould St Ste N, Sheridan, Wyoming 82801, USA
D-U-N-S
14-507-3841
Email
contact@greekerlabs.com

© 2026 Greeker Labs LLC. Yunnori