Please make sure you are familiar with all the modding basics covered in the "Basics Modding Guide" and the basics of unity navigation, links below. This guide assumes you already know how to navigate the scene and is familiar with the interface, and have Unity and Mod SDK installed. Without this crucial info, it will be difficult to go through this specialized guide.

Steam Guide - Basic Modding Guide Link

https://docs.unity3d.com/Manual/UsingTheEditor.html
https://docs.unity3d.com/Manual/SceneViewNavigation.html
https://docs.unity3d.com/Manual/ViewModes.html
https://docs.unity3d.com/Manual/GizmosMenu.html
https://docs.unity3d.com/Manual/ImportingAssets.html

First of all you have to download the correct version of Unity. (Install and version is in the basic guide ).

If you dont have the "Mod" tab in the inspector area go to Window -> Mods












(Where the "Mod" tab should be)



















(Window -> Mods)

Now you have the "Mods" panel ready. Nice
















(What the mods tab should look like)

Rename the new folder to DecalPackage (title is not important)
Mod structure is explained in the basic guide .
Main folder is “ModsName/Data/” here is include game assets (FBX, PNG, JPG)
Script and thumbnail please insert to mods folder “ModsName/”

For the stickers to work properly, please insert the image files for the stickers in "PNG" format without a background with dimensions of 512x512 pixels. And your graphics must be straight and in the middle.












Is a good idea to have two versions of each decal. Color decals look very nice, but allow limited visual adjustments in game. If you have black and white versions of you art, players can change their color or use them as interesting emissive decals. Decals that have colors in them already are impossible to adjust through color palette in Game UI. See the examples below.











There is an option to repeat decals, to create endless patterns. If you want your drillship to look like a military vehicle, have fish scales or just have something cool in the interior you gotta create "seamless textures' '. The amount of used decals is limited, so using repeated decals is critical if you want to create looks that transform drillship into something totally new!








Mod Asset definition
First, prepare a preview image. (thumbnail). "PNG" format with a background with dimensions of 512x512 pixels. Paste into “ModsName/” and set important image settings.




































Drag and drop icon from Project window to Mod Definition in Thumbnail column.




















Next in your mods “ModsName/Data/” drag and drop from disk (desktop, documents, folder) images and change image as thumb file. Texture type: Sprite (2D and UI) and check Generate mip maps in Advanced.

In order for images to be displayed in the game, it is necessary to create "DecalDefinitions" for them.
For this to work, it is better to copy an existing file and then edit it.

Therefore, we recommend importing one of the Samples decal mods in the "Mod" tab.














Just import one of the marked "Decal samples" and you can work with them.
The files will be in Assets / Samples - then you will find them here.










































Next, please clean the references to the image. Click to Resource column and press “delete”.











Next drag and drop image (png file) name Decal1.
Next mark Decal Resource “Decal1” file and press ctrl+D and duplicate file and drag and drop the image reference. Each image has its own reference.

If you want to have your own image category, copy the "DecalCategory" asset to the folder “ModsName/Data/”.







In all fields, replace the word "Art" with your category name. Please use CamelFont without space.




















Next change in all images asset “DecalDefinition” category.

Now we're all ready to build your mod!

Click to “Mod Definiton in “YourMod” folder and in inspector press button “Build”










The build manager will copy your mod to your PC to this path.



Start VOLCANOIDS game, in the Main menu, go to MODS and mark checkbox next to you mod, and click to Apply configuration.












If all goes well, you can publish your mod directly from the game on Steam and show players and your friends your work.

Publish from game:




Publish from Unity:
(illustration image only)