Interesting idea. A couple of notes: I didn't know how to run the game at first. I tried to open the HTML file from Google docs and I saw the raw HTML, and then I tried to download and everything worked fine. Once in game, I didn't know what to do beyond clicking the first couple of letters. Can you string together a longer story? Also, some words only showed the word (microscopic) but had no sentence. Rewind did not work for me either. The screenshot you show above looks interesting - does it branch out in that way in browser? Thanks for sharing!
I'd recommend hosting it somewhere else besides Google Docs so it can be opened in a browser, though.