Terms of service
Stack Stack: Box Tower · 2026-10-02-cloud-backup-v2
Service and accounts
Stack Stack: Box Tower is a game provided by Slow Turtle. This version requires users to be at least 18 and signed in. Use a Google, Facebook or Apple account you are authorized to use, and keep access to it secure.
Local storage and game currency
History, tower scenes, coins, undo tickets, and owned and equipped cosmetics are stored on your device by default. Data that has not been saved to the server cannot be imported on another device. Game coins cannot be exchanged for cash, and currency transfers between accounts are not supported.
Server backup of my data
Open Cloud save in Settings or History to check and save your data. Coins, tickets, owned and equipped cosmetics, achievements, best scores, last mode and settlement records are saved first, followed by tower records not yet saved. Backups are private to your account, with no automatic sync or ranking publication.
Import history
Import history only adds cloud records missing from this device. Existing local records remain, with no changes to coins, tickets or cosmetics and no repeated rewards. Use Import to this device to bring both game progress and records.
Restore my data
Import to this device lets you review the backup date and changes, restore progress and merge tower records. Coins, tickets, cosmetics and other progress are replaced, not added, so later changes may be overwritten. Permanent achievement progress is preserved without repeated rewards. Each backup’s progress applies once per device; retries import remaining records.
Using multiple devices
Backups are manual. Progress on multiple devices is not automatically synchronized or merged. When moving to another device, finish saving on the device with the latest progress, then retrieve the backup on the other device signed into the same account. Review the on-screen details before replacing an existing server backup. If another save has changed it, review the latest backup again.
Save and import results
Storage and request limits apply. Progress may be saved while some tower records remain due to limits or connection errors. Check progress and record completion separately on screen. Completed changes remain after interruption; failed local originals are not deleted. Retry uses the original snapshot. Check the backup again to save the current state.
Public content and fair play
When rankings are available, choosing to register a record or submit a verified run makes your nickname, tower scene, and score visible to other users. There is no separate publication confirmation. Signing in or making a private backup does not register a ranking entry. Ranking settings are also unavailable while rankings are not offered. Do not use names that infringe others’ privacy or rights, or hateful or obscene expressions. Ranking entries are subject to server validation and registration criteria.
Ads and rewards
The game includes ads and has no app-wide ad-off switch. Required regional privacy consent and withdrawal remain supported. Completing a rewarded ad grants the stated reward once. Availability depends on ad supply.
Account deletion and support
You can request account deletion in account management under Settings. The account’s server backups and public records are removed through the deletion process, but originals stored on your device are not automatically erased. After account deletion, that account’s server backups cannot be retrieved. If you cannot access the app, use the support and account deletion guide below. See the Privacy Policy for data retention and how to exercise your rights.