I have recently acquired the best proof that video games are an art form, Shadow of the Colossus. The only way can describe it right now is with just a few words: "Holy shit!" and "I need a towel". Seriously, it's that awesome.
First of all, the graphics are to die for. For those of you little kiddies that think the most advanced graphical tricks, such as normal mapping, are the only way to make a game look great, this game proves you all wrong. It doesn't have that high of a poly-count, nor does it use advanced vertex shading, but it has artistic style. In fact, it radiates style. The size, scale, and depth of the world gives it a better feeling of "reality" than most games do. Prince of Persia: SoT and God of War are the only recent games to compare in this respect. My words can't express what this game looks like in motion. You just have to see this game in motion.
The sound adds a lot to game. There are no full orchestrated soundtrack nor guitars wailing to drive the action. It's mostly just ambient sound. However, the music that is there fits perfectly. It not only sounds good, it's powerful. I particularly like the music that plays when a colossus falls. If that moment doesn't move you at least the slightest bit, then you have no soul.
All of this presentation is nice, but it wouldn't amount to anything without good gameplay to back it up. Rest assured, this game has it. While the control scheme takes a little adjustment to get used to, it works very well for this kind of gameplay. There truly has been no game like this ever before. It is composed entirely of the most awe-inspiring bosses I have ever seen. If you thought Metal Gear Rex was something, just wait until you play this. I applaud the guys behind the colossus designs; they are the most unique battles I've seen in a long time. I could describe the battles, but that would spoil it for you. Part of what makes them so great is figuring how to defeat them.
My only complaints with Shadow of the Colossus so far are that steed is quite stubborn and the camera occasionally has a problem finding the best view of the action. The camera just tries so hard to find the most cinematic angle that occasionally it blocks out some of what you need to see. They're only minor quibbles and don't detract from the game much at all.
I highly recommend Shadow of the Colossus to everyone, both the hardcore and mainstream audiences. You should not miss out on this game. If ever you find yourself arguing that video games are a ligitimate art form, this the game you should use as proof.