Grand Theft Auto VI is an upcoming paid title according to official details

https://spark-wiki.win/index.php/GTA_VI_free_download_a_nowoczesne_Vice_City:_co_ju%C5%BC_wiemy_o_grze%3F

Grand Theft Auto VI is an upcoming paid title according to official details, so gta vi free download is only relevant when referring to promotional media assets.