Phoenix Vision – a comprehensive modification of the game’s visual aspects.

I installed this mod instead of my own build, and I didn't notice any significant changes. Also, I'm used to having backgrounds in the back, but there aren't any here. Briefly, what are the most significant changes that affected the game's graphics?

You need version 3.1 of the game. Also, the mod file needs to be placed in the data folder, not UserMods.
In addition, some third-party mods may cause conflicts, and this mod will only work partially.

Regarding the list of changes, check the first post of the topic; there's a link to it, and there are also screenshots a little further down.