Do you know how to unpack game’s files with the Asset Manager? [Script][Basics]Modding Beginner's Guide I - #2 by Elfe
Then you can change the textures but you don’t have to mod the game / pack the files / build the mod
which is usually necessary, you can just put changes texture in settings folder such as in this thread [Mod] NBA Shamblers (download to see where the changes texture
I’m not an expert at this, maybe there’s a way to make Blade Spirits less visible by changing their .dbr file?
