@yukinoh1989 The multires modifier is kind of like adding subdivisions, which you can then use to add details. You’re able to save different “levels of detail” if you will. So at a resolution of 5, it could be intricately detailed, but at a level of 1 it’s just the bare minimum shapes. I hope that makes sense. If you’d like to know more.
When people talk about making maps, whether that’s a diffuse (color), specular (strong highlights), normal (imitating how light falls on a surface), or others, they mean they are saving out the information into a texture. This is great for games in particular because it saves a lot of resources that would otherwise lock up the game because the computer is trying to calculate many things. I hope this helped.
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