Privacy Policy
Effective 12 November 2026
In short
- You can play Riftdive without an account. Your progress — gold, stones, gear and settings — is saved on your phone only.
- Signing in with Google Play Games is optional. It is needed for the leaderboard and to keep purchases with your account.
- We use Google services for sign-in, purchases and optional video ads. We do not sell your data.
- You can ask us to delete everything we hold by writing to hamhansamu@proton.me.
Who we are
Riftdive is published by Tam Duc Studio, an individual developer in Vietnam, who is responsible for the data described here. Questions or requests: hamhansamu@proton.me — we answer within 30 days. You must be 13 or older to play; if a child has used the game, write to us and we will delete what we hold.
What we collect
Device. A random identifier our server creates for your installation the first time the game goes online (not your advertising ID). It is used to keep your play turns, purchases and leaderboard entries.
Google Play Games account (optional). If you sign in, we receive your Play Games player ID and display name — never your password or email address.
Leaderboard. The name you choose for the leaderboard, and your best result each week in each rift (difficulty level and clear time). Other players can see your name and result.
Purchases. Which item you bought, the Google Play order number and purchase token, so we can verify the purchase with Google and give you the item. We never see your card or payment details.
Gameplay events. A short record of what happens in the game — for example a run starting or ending (rift, floor, difficulty, win or loss, duration), a reward ad watched, or a menu opened — linked to your device identifier. We use it to balance the game and fix problems.
Advertising. Optional video ads from Google AdMob that you choose to watch for a reward. What AdMob collects, and whether ads are personalised, follows the choice you make in Google's consent dialog where it is shown. When you finish an ad, AdMob tells our server that the reward was earned, with a one-time code from the game.
What stays on your phone
Your progress — gold, stones, gear levels, unlocked hunters and skins, quests, settings and language — is stored on your phone only. There is no cloud save: if you uninstall the game or lose your phone, this progress is lost, and signing in does not restore it.
How we use it
We use this data to run the game (turns, rewards, purchases, leaderboard), to stop cheating and abuse, to balance and improve the game, and to show the optional ads you choose to watch.
Who receives it
- Google — Play Games (sign-in), Play Billing (purchases) and AdMob (ads).
- Other players see your leaderboard name and results. Nothing else about you is shown.
We do not sell personal data.
How long we keep it
| Data | Kept |
|---|---|
| Device identifier, play turns, Play Games link, leaderboard name and results, items you own | Until you ask us to delete them |
| Gameplay events | 90 days |
| Purchase records | Until you ask us to delete them, unless tax or accounting law requires us to keep them longer |
Your choices and rights
You can play without signing in, and you can choose not to watch ads. You can ask us for a copy of your data, to correct it or to delete it by writing to hamhansamu@proton.me — it's free, and we answer within 30 days.
Deleting your data
On our server: write to hamhansamu@proton.me and ask us to delete your data. If you signed in with Play Games, tell us your Play Games display name; if you played without signing in, tell us your leaderboard name or roughly when you started playing, and we will help you find your device. We delete your device identifier, Play Games link, turns, purchase records, owned items, leaderboard entries and gameplay events within 30 days. Records the law requires us to keep are kept as required.
On your phone: uninstalling the game, or clearing its data in your phone's settings, deletes your progress. It does not by itself delete what is on our server.
If you are in the EEA or the UK
We rely on contract to run the game and give you what you buy; on legitimate interests to prevent cheating and to balance and improve the game — you can object by writing to us; and on consent for personalised ads. You may complain to your data protection authority.
Security
Traffic between the game and our server is encrypted, and the game's secret for your device is kept on your phone. If a breach ever affects your data, we will tell you.
Changes
We will update the date above when this policy changes, and tell you in the game about important changes.
Language
If a translation and the English version disagree, the English version prevails.