Save Format

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Save Format

Technical documentation of the save file format.

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Overview

Saves are stored in JSON format in the saves/ directory.

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File Location

Platform	Path
Windows	%APPDATA%/idle_factory/saves/
Linux	~/.local/share/idle_factory/saves/
macOS	~/Library/Application Support/idle_factory/saves/

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Format Version

Current format: V2 (string-based ItemId)

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Structure

{
  "version": 2,
  "player": {
    "position": [x, y, z],
    "inventory": [...]
  },
  "world": {
    "chunks": {...},
    "machines": [...]
  },
  "quests": {...}
}

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Modding Compatibility

Saves using mod items are compatible as long as:

• Mod is still installed
• Item IDs haven't changed

Unknown items are logged and skipped on load.

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See Also

• Data Mod Guide - Mod item IDs