Question How to force builds to not import unused assets ?

I'm currently using Unity version 2021.3.25f1 and building for Android (Android App Bundle).

Recently, I downloaded VFX assets from the Unity Store. Surprisingly, after importing these assets into my project, my build size increased from 100MB to over 150MB, even though I haven't utilized any of these assets within scenes, scripts, or other aspects of my project yet.

According editor.log Unity do import everything within my project folder, referenced or not. Changing the stripping level to "high" have not helped aswell.

I'm wondering if there exists a setting that can be enabled to prevent importing of unused scripts, images, materials, models, ... in my build.

If there is nothing unity can do, what is the best way to find "unused assets" and get rid of them ? Im using a asset with 100 scripts + and i dont know which is needed for basic functionality. I like to keep as many textures as possible aswell, when building effects with particle system its helpful having a lot of stuff available inside the project.

 

Unity should only be including what's referenced in scenes in your build list, any assets in Resources folders, and any Asset Bundles/Addressables groups included in your build.

So first question I suppose, are these VFX assets all in a folder called Resources?

 

Oh god yes, all of them were in my Resources folder. I moved them out and my build has normal size again. Thank you so much.

May could i ask what Asset Bundles/Addressables groups are ? And how i can check if one of those are in my game ?

 

If you don't know what they are, they aren't in your project at all.

Asset Bundles is the old system of organising/loading and unloading assets, often for remote content delivery. Addressables is the new method of doing so.

 

PS: stripping level only refers to code stripping, as in stripping unused methods.