Flower is another game that has jumped up to one of the best "experience" games I've ever played. Some other ones: Portal, Braid, Ico and Shadow of the Colossus. Just amazing to play, and games that I almost literally said... "WOW" at the end of. Absolutely would recommend, and in the meantime, check out this link with an interview with some of the developers and their attitudes. Very awesome. Bravo thatgamecompany, bravo :)