I've also seen some of the games from the Humble Bundle campaigns show up there, like Braid, World of Goo etc.

Interesting to see how many games show up here vs in the Chrome app store like From Dust. Chrome store seems to have a mix of NaCl, WebGL and HTML5 based games.

http://www.ubuntuvibes.com/2012/03/look-at-3d-native-client-...