Both from a graphical point of view and gameplay mechanics, Journey was an emotional journey that is worth taking. Even without a plot or a method of communication, through stunning artistic expression and minimalist game design, I felt compelled to keep going.
I had 6 partners along the way without knowing until I ran into them. You can't talk to them and there are no names displayed (until the end), yet when one would vanish I felt sad as we were together traversing a beautiful yet unrelenting environment that brought humility to your situation.
When I got near the top and froze to death, I thought that was it. I felt sadness as I watched my sherpa freeze down to a slow, pathetic crawl. Then when the sun comes out reviving you and you're flying up the rest of the mountain like an angel, it was simply beautiful.
The only other game to bring this kind of emotion through its design is Flower, which (for those who don't know) is the same studio. ThatGameCompany is an amazing studio and I'm glad they're now going multiformat so more people can play their games.
Side note: This game would be excellent on Vita, as it's only 2 hours long.