SWARM has no account system and no server. Your progress and settings are saved locally — in your browser, in a local save file on desktop, or in local app storage on mobile — and never transmitted anywhere.
SWARM does not use analytics, crash reporting, or advertising SDKs of any kind, and has no account or sign-in system. Nothing about how you play is ever collected or sent anywhere by the game itself.
Clearing your browser's site data (Web), deleting the save file from your OS user-data folder (desktop), or uninstalling the app (mobile) removes all locally-stored progress. This is permanent and cannot be undone, since there is no server copy to restore from.
SWARM does not knowingly collect personal information from anyone, including children, because it does not collect personal information from anyone at all.
If this policy changes, the effective date above will change with it.