I have played some games by the author, but this might be the first time I'm trying a horror game by said author.
Anyway, short and sweet, with sudden color changes and screen shaking in the special effects department. A mysterious person texts you out of nowhere, and you are unable to shake them off. Through a text messaging interface, with a few choices on your part, they tell you of the battle raging in you.
It's an entertaining read, although if it were a horror game, I'd describe it as a more... abstract type of horror. Anyway, at 479 words, it's a good short read for the jam.