The short version. There is no account, no sign-up and no password. The game never asks for your name, email address, phone number or location. The only thing you choose that leaves your phone is a nickname, and only if you play online.
Almost everything. Your level, coins, best scores, streaks, block skins, purchased power-ups, settings and walkthrough progress are stored in the app's own local storage on your device. They are not uploaded, and they are deleted when you uninstall the game.
When you use the online screens the game signs in anonymously to Google Firebase. Anonymous sign-in means an account with no personal details attached — a random identifier, not a login. While you are on those screens the game stores:
The same nickname and score are mirrored to a second service, Supabase, which draws the global top-ten board. Your rating and nickname are visible to other players — that is what a leaderboard is. Nothing else is.
Once a match starts, the two phones talk directly to each other using PeerJS (WebRTC). Game moves do not pass through our servers. If a direct connection cannot be made, the traffic is relayed by PeerJS's public relay servers instead.
The game shows rewarded ads — ones you choose to watch in exchange for an in-game item. These are served by Google AdMob, which uses your device's advertising ID. You can reset or delete that ID at any time in Android Settings → Privacy → Ads. If you never tap a "watch ad" button, no ad is loaded.
The game schedules reminders and alerts on your own device, and uses Firebase Cloud Messaging to tell you when another player challenges you. You are asked for permission the first time. If you say no, the game works normally and simply stays quiet. You can turn notifications off at any time in Android Settings → Apps → Tblock Duel → Notifications.
The game reads your device model, Android version, processor cores, memory, screen size and refresh rate on the device only, to decide how much detail to draw. That information is not transmitted anywhere.
| Service | Operated by | What it receives |
|---|---|---|
| Firebase Authentication, Realtime Database, Cloud Messaging | anonymous id, nickname, ratings, presence | |
| Supabase | Supabase Inc. | nickname and score for the global board |
| AdMob | advertising ID, for rewarded ads | |
| PeerJS | PeerJS project | relayed match traffic when a direct link fails |
Tblock Duel is not directed at children under 13, and the game does not knowingly collect information from them. If you believe a child has entered a nickname you would like removed, contact us at the address below and it will be deleted.
Local data is deleted when you uninstall the game.
Online data — your nickname, anonymous id and ranked record — stays so the leaderboard remains accurate. To have it deleted, email the address below with the nickname you used and roughly when you played, and it will be removed from the ranked tables and the global board. There is no charge and no account to close.
If this policy changes, the date at the top changes with it, and the new version replaces this page at the same address.