Privacy policy

Updated: 3 October 2026

Operator and contact

Dopamine Blast is operated by 디제이(DJ), a sole proprietorship represented by 추동준 (Dongjun Choo), based in Seoul, Republic of Korea. Privacy questions and requests are handled by the operator at studio@cdjstudio.xyz. The game is primarily intended for teenagers and adults.

Local game data

No account is required. Your saved solo puzzle, best score, language, sound and appearance settings, tutorial completion, and new-player advertising grace record are stored on your device. There is no account-based cloud backup. We do not request microphone, camera, contacts or precise-location permissions, and do not include a separate gameplay analytics SDK. Online duels and advertising involve the processing described below.

Online duels

When you create or join a duel, a Cloudflare-hosted relay receives the room code, player role, match and connection identifiers, reconnection credentials, message sequence and timing information, block movement and placement events, and game-over reason and score. On reconnection, it also relays a snapshot containing the board, available and held blocks, score, combo and piece sequence. This information connects the two players, displays the opponent's play, restores a connection and determines the match result. Your opponent receives the relayed gameplay information and match result, rather than your support email or advertising identifiers.

Gameplay messages and board snapshots are relayed without being written to a match-history database. Connection and reconnection metadata are temporarily kept in the room's connection state, which can survive a server sleep. That state is cleared when the match ends or both players disconnect. A host waiting for an opponent can keep the room open while connected; there is no fixed retention period for an open waiting room. Network disconnection detection can take time. Leaving a duel ends your participation; deleting local game data does not erase information that the other player has already received.

Advertising

The iOS and Android apps can show Google AdMob banners and interstitial ads when starting a new solo game after game over. Google may process IP addresses (including approximate location inferred from them), device identifiers, ad impressions and interactions, app interactions, crash reports, performance and other diagnostic data for advertising, measurement, security and fraud prevention. The app requests non-personalized ads; this does not eliminate data processing.

Ads are requested only when Google's consent system permits them. Where available, use Studio → Ad privacy choices to review your choices. A missing or unavailable ad does not prevent starting a new game. The ordinary web version does not request AdMob ads. Google's processing, privacy controls and retention are described in the Google Privacy Policy and advertising information.

Service providers and processing outside Korea

Cloudflare, Inc. provides website hosting, network security, the online-duel relay and support email forwarding. It processes technical request information such as IP address, request URL, connection time and browser or device information, as well as the duel information described above when those services are used. When you email our support address, Cloudflare forwards your sender address, message and attachments to the operator's Gmail mailbox. Google LLC and its relevant affiliates provide AdMob advertising and consent services in the mobile apps, and Gmail for receiving and storing support correspondence. Advertising information is processed during ad requests, impressions and interactions; support information is processed when email is received, forwarded and stored. App and web requests use HTTPS or secure WebSocket connections; support correspondence uses email delivery services.

Cloudflare's South Korea addendum identifies transfers to the United States, United Kingdom, Singapore, Australia, Germany, Portugal, France, Japan, Canada, Netherlands, UAE, India, Mexico, Malaysia and Sweden. This is Cloudflare's published list, not a claim that every request is sent to every country. Google describes processing on servers around the world and in data centers outside your country. Provider technical, security, advertising and email records follow their respective retention criteria, including service purposes and legal obligations. Ending a match or deleting the operator's support records does not immediately delete every provider record. Please see Cloudflare's privacy policy, South Korea addendum and DPA, and Google's privacy policy, Korean additional information, retention information and partner-app data-use information. Provider privacy contacts are dpo@cloudflare.com and googlekrsupport@google.com. Requests concerning information handled by the operator can be sent to studio@cdjstudio.xyz.

Provider policies: Cloudflare privacy policy, South Korea addendum, customer data processing addendum; Google privacy policy, Korean additional information, retention and deletion, Google's use of data from partner sites and apps.

Support correspondence

If you email us, we use your email address, message and any attachments you choose to send to handle your request. Please do not send passwords or sensitive information. We keep correspondence while the request is being handled. After resolution is recorded, we retain it for 30 days and delete it from the operator's support records during the next daily cleanup. The cleanup first records requests marked as resolved; it does not delete unresolved requests. If applicable law requires continued retention, we retain only the required information for the legally required period and then delete it. This deletion rule applies to the operator's support records and attachments. Google may retain system, backup, legal or security records under its separate deletion and retention policies. Your own email service may also retain copies.

Deletion and your rights

Use Studio → Delete local data to erase the game's saved data on this device. You can also clear the app or browser's stored data. This removes local saves and preferences and cannot be undone; it does not delete Google or Cloudflare records or support correspondence. The app does not provide an account or a server backup from which these saves can be recovered.

You or your legal representative may contact studio@cdjstudio.xyz to request access, correction, deletion or restriction of personal information handled by the operator, subject to applicable law. We may ask for information needed to verify and locate the request. You can choose not to use online duels or send support email, and can review available advertising privacy choices. Without a support email, we cannot handle that email request. Advertising privacy choices do not necessarily stop all Google processing; the local solo game remains available. Provider-specific requests can also be made using the contacts in their policies. Material changes will be reflected on this page with an updated date.