Save Compatibility Tester – Save Migration & Regression Testing

Catch broken save files before release by testing historical saves against your current loading, migration, and validation code.

• Tests historical .json, .sav, .save, and .dat files

• Version-based fixture folders

• Custom adapter creation wizard

• Built-in PlayerPrefs snapshot testing

• Pass, warning, and failure results

• Field-level expected and actual values

• Suggested fixes for detected issues

• HTML and JSON report export

• Unity batch-mode CI entry point and exit codes

• Demo and real-world migration samples

• Editor-only: no runtime or player-build overhead

• Compatible with Built-in, URP, HDRP, and custom render pipelines

• No external server or paid service required

Save Compatibility Tester is an Editor tool for detecting save-data regressions before shipping an update.

Keep anonymized save files from previous releases as fixtures, connect your real save loader through a lightweight adapter, and test every historical save from one window.

The tool reports whether each save passed, produced a warning, or failed. Detailed results show the affected field, expected and actual values, and suggested fixes.

A built-in PlayerPrefs Snapshot workflow lets you capture and compare PlayerPrefs contracts without writing a custom adapter.

Included demos and an adapter creation wizard help you connect the tool to your project. Reports can be exported as HTML for review or JSON for automation and CI.