I like the concept of user generated content. I haven't been that into games in a very long time at this point, but from what I remember of playing the few MMORPG's that I did play, they always seemed to fall down when it came to making the game world truly respond to user input. What I mean by this is, what if the game world's state was as responsive to your input as say... a forum, or blog comments section, or even a social website?<p>Well, anyways... I checked out the first game in the article's list of "great" HTML5 games (Contre Jour: <a href="http://www.contrejour.ie/#fbid=N0F1LHvfzzM" rel="nofollow">http://www.contrejour.ie/#fbid=N0F1LHvfzzM</a>). It was pretty good. Seemed to have relatively unique, interesting game mechanics, nice visuals, and I liked the music.