Actually GTA ['↑Grand Theft Auto'] could be easily described as art.
GTA is about the breakdown of the social contract. Given an open world that responds to their actions, but has no actual effect on them, most players tend to sit down and go on long rampages in a short amount of time.
Part of what makes games art is the interaction between game and player. In that sense, a person playing GTA is making a powerful statement about society, psychology, and the subconscious mind.