HomeStuck is a webcomic created back in 2009. It is illustrated in MS Paint and written as if the reader is playing a game; a sort of interactive comic/flash game hybrid – with the use of hyperlinks, gif, video, music and actual game-play etc.
It has inspired fan-content of similar fashion. In this fanfiction – Bones of the Black Marrow especially in chapters 1, 4, 6 and 36. The content may be NSFW, however, the execution of the story is one which I had never seen before. The author uses html to alter the interface to make the reading more engaging.
Another work that I found, one that takes traditional narrative to the next level is facebook by new york-based interactive art director Lim Si Ping. It is an interactive book that uses facial recognition to track your online profile using search engines. The book then writes the narrative according to your personal information. “As the story unfolds with each turn of a page, you realize that this is a story about you.”