Many games try to be creative, artistic and moving. Journey succeeds.
Not from the technical and artistic standpoints, though Journey is remarkable from both... From the emotional standpoint.
Journey will show, guide, amaze, surprise and touch you. It might even move you to tears (it did me, anyway).
Journey should prove to anyone who still doubted that there is no such thing as a clear distinction between art and video games.
The multi-player part is amazingly innovative. You might feel a little frustration at first, stuck with strangers, unable to communicate effectively with them... But after a while, you'll be amazed at how much can be conveyed through simple chirps and you will crave the unusual companionship.
Do not mind that the game is short (it truly is). This is a journey worth taking. Many times.