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AI agent for game developers

Save Data Compatibility Agent

Every supported old save loads correctly in the new build

Quality controlCreativesIT and developmentProduct development
See how it worksGet access
Save Data Compatibility Agent: what goes in, what the agent does and what you get

What it does

A patch can corrupt old save files, and players lose progress they cannot get back. Before release, this agent loads a set of saved files from earlier versions into the new build. It checks that progress, inventory, settings and unlocks are intact and logs every difference. If a field is lost or changed, it proposes a migration step and tests it again on all the files. It also tests the result against edge cases such as a full inventory, a save made mid-quest or a corrupted file. It repeats until every file loads with no unexplained difference. The lead approves the migration and the release. Edge case: a save from a version too old to support gets a clear message, not a crash, and is logged.

How it works

Follow the arrows from top to bottom. The orange dashed arrow is the loop: when a check fails, the agent goes back and tries again.

Start and resultWhat it doesA check on its own workWaits for your OKGoes back and retries
Yes, continueYes, continueApprovedNoNo 1 STARTS WHEN Patch candidate ready 2 USES A TOOL Collect saves from each supported earlier version 3 USES A TOOL Load each save into the new build 4 USES A TOOL Compare progress, inventory, settings and unlockswith the original 5 CHECKS THE RESULT Is every field intact or an intended change? If not: write a migration step for the lost field andreload all saves. Back to step 3. 6 DOES Test edge cases: full inventory, mid-quest anddamaged saves 7 CHECKS THE RESULT Do edge cases load or fail with a clear message? If not: fix the migration or the error message andrerun. Back to step 3. 8 DOES Write the migration report 9 YOU APPROVE Lead approves the migration and release 10 RESULT Saves verified for release
Read the steps as a list
  1. Patch candidate ready
  2. Collect saves from each supported earlier version
  3. Load each save into the new build
  4. Compare progress, inventory, settings and unlocks with the original
  5. Is every field intact or an intended change?If not: write a migration step for the lost field and reload all saves. Back to step 3.
  6. Test edge cases: full inventory, mid-quest and damaged saves
  7. Do edge cases load or fail with a clear message?If not: fix the migration or the error message and rerun. Back to step 3.
  8. Write the migration report
  9. Lead approves the migration and releaseThe agent waits here for your OK.
  10. Saves verified for release

How it decides

A save passes when each tracked field matches its expected value after loading. Any lost or changed field is a failure unless the change is listed as intended.

  • Fail on any lost progress, item or unlock
  • Allow listed intended changes
  • Fail a crash on a damaged save
  • Test every supported version, not only the last

Make it yours

Every agent is a starting point. You choose these settings for your own situation.

  • Supported versions
  • Fields that must match
  • Edge cases to test
  • Intended change list

What keeps you in control

It always asks you first

  • Approving the migration
  • Releasing the patch

Hard limits

  • Never touches real player saves
  • Never releases the patch itself

It stops when

  • Done: all saves pass and the lead approved
  • Stop: no saves are available for a supported version

Set it up

We guide you through the set-up, step by step

Members get the full set-up guide for this agent. No technical skills needed: you copy, paste and upload.

10 minto set it up in your AI
5 AIsChatGPT, Claude, Copilot, Gemini, Grok
  • One set of instructions to paste into your AI, with the clicks for ChatGPT, Claude, Microsoft 365 Copilot, Gemini and Grok
  • The agent then walks you through connecting your own data, one source at a time
  • A downloadable copy with the flow chart, the rules and the full guide
Get access to this agent

An example run

What happensA patch added a crafting level. Of 24 saves, 5 from version 1.2 lost their bonus items after load. The check failed, so the agent wrote a migration that mapped the old bonus field to the new inventory slot and reloaded all 24. Every save passed except a damaged one, which crashed. The agent proposed an error message, and the lead approved the migration and release.

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