"Remastered visuals" refers to improving the graphics or appearance of something, such as a video game or a movie, in order to make it look better or more modern. Full definition
The game will feature remastered visuals which include new character models, improved textures, and improvements to pre-rendered backgrounds where applicable. (novacrystallis.com)
They fully remastered the visuals in Unreal Engine 4, bringing high - resolution textures and models to Xbox One with a (generally) 60 FPS frame rate. (windowscentral.com)
Relive two of the Fireseed clan's adventures with remastered visuals and modern controller support. (n64today.com)