GTA San Andreas was originally released on PC in the summer of 2005, immediately becoming a hit title that dramatically upgraded open-world sandbox gameplay opportunities available in the previous two 3D titles in the Grand Theft Auto franchise ( GTA3 and GTA Vice City). GTA San Andreas HD - The Definitive Edition Classic Mod is a free game add-on that transforms the visual presentation of one of the most popular gaming titles ever released on the PC platform.