What version history is, and what it records

Every time you snapshot a world, TopoBlocks appends an entry to its version history. Each entry carries three key pieces of information:

  • Hash — the fingerprint of this version’s contents, used to confirm it hasn’t been changed and is identical to what you saved at the time.
  • Size — the file’s footprint, so you can tell at a glance which is the pre-slimming version and which is the post-slimming one.
  • Source — whether this is a manual snapshot, a cloud backup, or the result of a repair / conversion.

With these three, you can identify each version accurately out of a pile of them, instead of guessing your way through a string of inscrutable timestamps. Creating manual snapshots on your device is free, and the records stay on your device; to learn how to build a backup habit in general, see how to back up a Minecraft world.

How to use “Restore as a new copy”

When you want to go back to an older state, the flow is straightforward:

  1. Open the world’s version history, browse by time, and use the hash, size, and source to find the version you want to go back to.
  2. Select it and confirm the hash and size are the ones you want.
  3. Tap “Restore as a new copy” — the system builds a fresh world file from this older version.
  4. Import this new copy into the game.

The key point: restoring creates a new copy by default and never overwrites your current world. Your current save, along with the original file and its hash, are all kept exactly as they are. Even if you pick the wrong version, you only end up with one extra copy and lose nothing — “zero accidental overwrites, a traceable new version generated every time” is a product red line. If you specifically want to confirm this point, see will restoring a world overwrite my current save.

On-device snapshots vs. cloud version history

Both can be restored; the difference is where they’re kept and what they can do:

  • On-device manual snapshots (free) — recorded on this device, good for temporarily keeping a few extra versions. If the device is gone, or you never synced anywhere else, these snapshots are gone too.
  • Cloud version history (World Pro, about ¥22/month, 20GB) — history is kept in the cloud long-term, can be restored across devices, and multiple versions are retained automatically. Both uploading a backup and pulling a restore only run when you explicitly authorize them, so nothing touches your world without your knowledge; prices are shown in the app.

Either way, restoring follows the same red line: generate a new copy, don’t overwrite the existing world. To learn how to turn on cloud backup and how to verify readability after uploading, see how to make a cloud backup of a Minecraft world.