ABOUT THE FREE SIMS 4 MILESTONE EDITOR

How LIFE ATLAS works

LIFE ATLAS is a free, independent browser-based milestone save editor for The Sims 4. Inspect your Sims’ recorded life events and carefully repair missing or incorrectly linked milestones.

100% browser-basedFree to useNo file uploadIndependent fan project

What you can do

Repair a missing wedding milestone

If your Sims are married but only one received the Got Married milestone, compare both event records and restore the missing one from a compatible example.

Choose the correct spouse

Each relational event has an owner and a separate participant. Check both names and Sim IDs to avoid making a Sim appear married to themselves.

Preserve repeated events

A Sim can have multiple crush events involving different people. LIFE ATLAS shows each stored occurrence separately.

Inspect event order and dates

Review or adjust recorded game-time timestamps. In-game display order may also depend on Sims 4 UI behavior.

A safer editing workflow

  1. Close The Sims 4 and back up your saves folder.
  2. Open the editor and select a .save or .save.ver* backup. Processing happens locally in your browser.
  3. Select the Sim, the milestone and, for relational events, the other participant. Verify the completion sample before editing.
  4. Review changes, download a new save file and test it in a separate slot. Keep the original untouched.

Frequently asked questions

Why is the Got Married milestone missing for one spouse?

The Sims 4 can record a marriage relationship while a milestone event is missing on one Sim. The relationship state and the milestone history are separate pieces of save data.

Can I fix a milestone that names its own owner as the spouse?

For supported event structures, yes. LIFE ATLAS lets you inspect the owner and select the actual participant independently. Verify both IDs before exporting.

Why do I see the same crush milestone twice?

A milestone type may contain multiple recorded occurrences. LIFE ATLAS lists each occurrence with its own participant and recorded timestamp.

Will the original wedding date be preserved?

If a valid completion record exists in another Sim or an older save, its game-time timestamp can be reused. Wedding and relationship-start events do not necessarily happen at the same time.

Are my save files uploaded anywhere?

No. In this static version, save parsing and editing take place in your browser without uploading the game file to a server.

Is a repaired save guaranteed to work?

No. Game patches and mods can change save structures. Always make a backup and verify a newly exported slot in the game.

Changing a milestone event does not itself change the actual marriage relationship state in the game.

Questions and bug reports

Telegram: @kamil_cm