GTA Vice City Modern v.2.0 is a mod for Grand Theft Auto: Vice City that aims to modernize the game's graphics, gameplay, and overall feel. The mod is designed to update the 2002 game to look and play more like a modern GTA game.
A game mod, short for modification, is a change made to a game's content or mechanics by someone other than the game's original developer. Mods can add new features, levels, characters, or gameplay mechanics, or even overhaul the game's graphics and sound.