BackMir Guide · v1.4.5 · Updated 2026-09-20
Cloud uploads across devices
Sign in to the same game account to sync at character selection across all three languages. Wait for “Synced” before changing devices. Checkpoint times do not decide which progress wins. The cloud keeps one current save plus up to two private recovery copies before a manual choice, full load or restore. Recovery copies expire after seven days. Local saving works offline.
Play Without an Account
Guests can create characters and play without an account. Automatic uploads are enabled by default after game sign-in and can be disabled in Cloud saves.
Saves Belong to a Browser and Site Address
Progress is stored in the browser’s site storage. Return using the same browser and site address to continue. Different domains, ports, browser profiles and devices have separate save storage.
Save Protection & Site Connection
Local saves are encrypted. Version checks do not upload progress; full cloud saves are private; character scores join the leaderboard by default and you can leave at any time. Saves remain client-generated and are not proof of fair play.
What Can You Play Offline?
Character selection, the game core and maps load in stages. Downloaded content remains available offline. A first visit or an uncached map or asset still needs a connection. Use the System menu to download the full offline resources when needed.
Keeping Your Progress
Use a normal browser window and allow site storage. Clearing site data can erase unsynced local progress. Cloud recovery offers confirmed current progress and unexpired copies saved before manual changes. Progress never uploaded must still be found in the original browser.
Why Did I Return to Town After Reloading?
Character progress is saved, but the map’s monster state is not a permanent save. Re-entering returns you to your home town and rebuilds the monsters. This is the current single-player save behaviour.
Save before changing devices
When the original device shows “Synced”, sign in to the same game account on the new device. Selection syncs automatically. Viewing saves, checkpoints, health or mana changes and cooldowns do not create new progress. Real divergence requires a character-level choice. Linking guest progress needs confirmation once. Browser sign-in alone does not sign in to the game.
Device conflicts and version recovery
Keep one game tab open per browser. Different characters merge automatically. Real changes to one character on both devices pause sync for an explicit choice, with neither side selected by default. Manual choices, full loads and restores first preserve both originals locally and in up to two private cloud recovery copies. These expire after seven days; routine uploads do not rotate them. One current cloud save remains.