Privacy Policy

This is a translation for convenience. If there is any difference, the Korean version prevails.

Effective date: 2026-11-14

BYGAMES (bygames.co.kr, the "Site") values users' personal information and complies with applicable laws, including the Personal Information Protection Act of the Republic of Korea.

1. Personal information we collect

The Site has no membership sign-up and does not directly collect information that identifies individuals, such as names, phone numbers, or email addresses.

2. Information stored on your device

Game progress (clear records, gold, gear, settings) is stored only in your browser's local storage (localStorage) and is not sent to the Site's servers. It is deleted when you clear the browser's site data. The display language you choose (for the site and the game) is also stored in the same local storage.

When you use "Duel a Friend," the nickname you choose, your best duel score, and a random identifier (UUID) used to distinguish devices are stored in the same local storage. This identifier is not linked to your name, contact details, or the like, and is not currently sent to the Site's servers.

When you press "Send a challenge," a link containing your nickname, duel score, and stage information is created and delivered directly through the messenger or app you choose. Anyone who receives the link can see that nickname and score, so please don't use your real name or other personal information as your nickname.

2-1. Information stored on the duel ranking server

When you finish a "Daily Duel" run, the following information is sent to and stored on the Site's duel server (Cloudflare) to rank scores: device identifier (UUID), nickname, duel date, score and the records used to calculate it (kills, rescues, combo, HP left, time taken), game version, and an irreversibly transformed value of your IP address (used to prevent excessive submissions from the same place; the original IP is not stored). Nicknames and scores are shown publicly in the rankings on the site and in the game.

This information is used only to provide rankings and prevent fraudulent records, and is deleted one year after it is stored. You can delete it immediately at any time by pressing Erase my server records on the game's "Duel a Friend" screen, or by requesting deletion by email.

"Live Co-op with a Friend" only relays game-screen information and control inputs between the two players' devices and does not store them on the duel server (your nickname is shown to the other player).

3. Advertising and cookies

The Site uses Google AdSense, an advertising service of Google LLC. Google and third-party vendors may use cookies to serve ads based on your visits to this site and other websites.

• How Google uses advertising cookies: policies.google.com/technologies/ads
• You can turn off personalized ads in Google Ads Settings. You can also opt out of third-party vendors' personalized-ad cookies at www.aboutads.info.
• For users in the European Economic Area, the UK, and Switzerland, consent to advertising cookies is obtained through a Google-certified consent management platform.

4. Access logs

The service hosting the Site (Cloudflare) may automatically process access logs such as IP addresses, browser types, and access times for security and service operation. The Site operator does not use them to identify individuals.

5. Children's personal information

The Site does not knowingly collect personal information from children under 14 (or under 13 where that is the applicable age).

6. Contact

Privacy inquiries: [email protected] (operated by Team Bylee)

7. Changes

If this policy changes, we will post the update on this page along with its effective date.