Creating a Livery Mod

A livery mod is a JSON file plus one or more PNG images.

1. Overview

At runtime the game:

1. Downloads your mod from mod.io (once the player subscribes).
2. Reads a manifest.json in your mod.
3. Loads the PNG(s) it points to.
4. Paints the texture onto the matching car in the garage/mechanic.

A single mod can contain one livery, or many — even liveries for several different cars.

What a mod contains:

my-livery-mod.zip
├── manifest.json        ← required, must be named exactly this
├── sunset_racer.png     ← your livery texture(s)
├── desert_camo.png
├── desert_camo_preview.png  ← your livery icon
└── sunset_racer_preview.png

Just testing, or keeping it private? You can also load liveries from a local folder on your machine without uploading anything to mod.io. See Section 10 — Local liveries (no upload).

2. What you need

• An image editor that can export PNG (Photoshop, GIMP, Krita, Substance, etc.).
• A **mod.io account** and the game's mod.io page (Over the Hill, mod.io game ID 13441).
• The UV template / reference skin for the car you want to paint (see Section 4).
• A text editor for the manifest.json.