Original Comment by: Mark
The artistic power of a video game is, in my opinion, like a film with elements of a live storyteller - not even theater, just a narrator who listens to the audience. Granted, that's only for some types of game, usually - but not always - the kind with an actual story to tell or a coherent setting or something. The Legend of Zelda. Super Mario Brothers. Metal Gear. Mega Man. Even The Sims. Some of them are fairly silly, but they're no less artistic than your average h0memade science-fiction-horror B-movie starring a rubber mask.
Other games are, of course, much more difficult to make a case for, as they're abstract representations of a private or interpersonal competitive or cooperative situation. Tetris. Pong. Madden 2006. These can provide the basis for other art, but in and of themselves they are no more artistic than chess or backgammon or basketball. They are not the work, but they can be the symbols.
Others still are not so much art as they are tools for creating art. The Movies and Electroplankton are obvious as a examples, but any game with a level editor or toolset can be counted among these. And, of course, single games can fulfill several roles.
Online games are abstractions of social interaction constructed with static art and with elements of the other three scattered throughout to taste.
Simulations, of course, are not art, but rather tools. Tools can be entertaining and profound, and I suppose that qualifies some of them to be art.
A thing that contains art is not automatically art, nor is everything art that contains art. A video game with which the author intends to present something more than a set of rules, in my opinion, is - or has the potential to be - art. The rules are what make it a game, and the electronically visual nature is what makes it a video game. The expressive content makes it art.
The more important question is not whether video games can be art, but whether video games are meritorious as art.