This is an interesting way to experiment a mutation through writing. Thank you for this game!
IN SHORT FOR PEOPLE READING COMMENTS: If you like singleplayer writing-game, you should try this game, or at least read it. This is a 7-pages document & it requires 2d6
In the first entry you'll describe your situation then roll the dices and keep writing entries until your mutation start (according to dices). When mutation start, you keep writing entries but with rules (you can no longer use some alphabet letters).
→ Added to The Hermit Club (an itch.io collection for singleplayer analog games)