"Remastered graphics" means updating or improving the visual quality of a video game or movie to make it look better and more modern than the original version. Full definition
Following in the footsteps of GTA III and Vice City, San Andreas will arrive with remastered graphics, new touch - screen controls and a reworked checkpoint system that is designed to make progression easier in the game. (androidauthority.com)
The game has been upgraded for its mobile release, with newly remastered graphics including dynamic and detailed shadows, a greater draw distance, an enriched colour palette, plus enhanced character and car models. (gadgetguide4u.com)