Not to bring up the video games as art topic again, but here's a decent article on the topic. And here's a quote from it:
Molyneux says he and his crew at Lionhead Studios (now part of Microsoft) take a similar approach to creating games. “Does a painter decide to make art or paint a picture? Does a composer decide to compose a piece of music or make art? Does a film maker want to make a film or art? I think they're more concerned with evoking emotions and creating something meaningful and enduring.
“I set out, especially today, to instill emotions in the people who interact with my games, which are broader and more visual than they have been before,” he explains. “I want players to feel a range of emotions, not just excitement—that is my ambition. If on this basis some critics describe this as artistic, then I will feel like I have succeeded.”