# Sync saves with Steam Auto-Cloud

> The Steamworks settings that make Steam Auto-Cloud carry Rolly Save's files between a player's computers and Steam Deck, the quotas to set, and what Steam does...

Product: Rolly Save 1.0.0 | Sheet: guide | Updated: 2026-10-31 | HTML: https://rolly-docs.pages.dev/save/guides/steam-auto-cloud/

Auto-Cloud needs no code: Steam uploads the files the settings below match when the game exits and downloads them before it starts. Set it up in the Steamworks partner site, App Admin > Cloud.

## Root paths

Add a root for the files of a Shipping build on Windows, which Rolly Save writes to `%LOCALAPPDATA%\<Project>\Saved\SaveGames` ([Set where saves are kept](https://rolly-docs.pages.dev/save/guides/save-storage/)):

| Field | Value |
|---|---|
| Root | `WinAppDataLocal` |
| Subdirectory | `<Project>/Saved/SaveGames`, with your project's name |
| Pattern | `<prefix>_*.sav`, with your File Prefix, such as `mygame_*.sav`; `*.sav` also syncs Enhanced Input's key files and Rolly Settings' files |
| OS | Windows |

Development builds write their saves next to the game: add a root of App Install Directory with the subdirectory `<Project>/Saved/SaveGames` to test them.

Keep the pattern wide enough for every file of a save: a slot's two copies (`_a.sav`, `_b.sav`), the profiles and the slot index. Syncing only some of them makes a slot load an older copy or miss from the slot list until it is loaded by name.

## Quotas

| Quota | Set it to |
|---|---|
| Files per user | 2 per slot the game can make (manual slots, `quick`, each autosave slot, checkpoint, `resume`) + 2 per profile + 2 for the slot index |
| Bytes per user | Twice the size of all of them at their largest |

A file past a quota is not uploaded; the copy on the other computer stays as it was.

## What Steam does on its own

- Steam syncs as the game starts and exits, and with Dynamic Cloud Sync also as the Steam Deck goes to sleep. A save interrupted by sleep can upload a damaged copy; the slot's other copy loads ([Check that saves survive a crash](https://rolly-docs.pages.dev/save/guides/save-safety/)).
- When both computers changed the files since the last sync, Steam shows its own dialog and the player picks one side. Rolly Save then loads what is on disk.
- Use Auto-Cloud or a cloud storage backend of your own, not both, or the two overwrite each other's files.