[lowfighter]

Ok, I tested and it works! Took mrz_Centercity.tga which is 256 by 256 and scaled it to 1024 by 1024. Saved as temp.tga then renamed it as mrz_CenterCity.tgb. Added to filelist.txt. Checked in game and you can see clearly the appearance changed. But it doesn't look really nicer lol. When scaling with gimp you can use different interpolation methods or no interpolation at all. With no interpolation there should be no change in appearance. With interpolation you see the change but of course it's better in some ways and worse in some other ways so it needs a lot more work than just scaling. So I think the way to go is to create first high resolution tgb, then scale it back to the tga.