A note with respect to the portions mentioning gaming: one of the ideas floating around recently in game design is a move away from the term "fun" towards the term "engagement." Why? Because "fun" implies a certain kind of candy-coated, theme-park image. It straight-jackets your views. "Engagement" can apply to all kinds of experiences - serious, practical, romantic, frivolous - so it allows a broader vision for the interactive medium.
Kind of an aside, but: reading this, I found that all the embedded pictures/videos actually made it harder to follow because they broke my concentration on the narrative. A few pictures may improve an article, but there are limits.
