This game was written in 500 words or less for the Neo Twiny Jam.
It uses a UI similar to a google doc, and the best part of it to me was the way that it looked and the detail in the highlights and such.
The second best part was the overall writing, which painted a fun picture of having a mysterious officemate who you contact every day but don't know in person.
The worst part was not having enough of it; the premise was great, but it kind of just stopped, presumably when the author hit the word limit.