Great to see a good number of writing projects harnessing Twine this year; I think this was the best. This experience used the CSS in Twine in a lot of technically interesting ways that I think elevated the experience a lot, such as through video clips, animated text, pop-ups and even fake errors. This has to be pushing what Twine can do to its limits and it's very impressive to see it used in such a diverse way.
The central conceit of an unreliable narrator going through revisions of a story surrounding an incident was aided by the meta 'glitches' representing a collapse of the veracity of the story (or perhaps the intentional manipulation of memory on the part of the narrator)? I think the deconstruction in reverse was a good arc to generally lead the reader against the narrator's account.
The integration of multimedia to depict some of the disturbing actions by the narrator made this game a lot more unsettling and provided a good counterpoint to the writing. The bait and switch of the horror being centred on the location, then the house, then the actions of the narrator was a good way to manage the reader's expectations and constantly shift the source of the horror in this game.
Great work on this one! I think this writing shows a lot of maturity, and combined with the technical accomplishment of pulling this experience off in Twine, I'm really surprised you composed and polished this in a little over a week. Can't wait to see what projects you work on next.
Also, have you read any of Mark Z Danielewksi's works? This was kind of reminiscent of the unhinged, form-defying approach I saw in 'House of Leaves'.