The level of detail in a game like Grand Theft Auto is almost art in itself, even if the game itself is not an "art game".

Some games are indeed not art e.g. FIFA 20, but some games absolutely are e.g. Pathologic (if pathologic is not art then I don't know what is).

This ultimately raises the question of what is and isn't art and I believe that if something really speaks to someone playing it then I think it is - many definitions seems prone to pretense and gatekeeping.