Some more writing mechanic concepts:
- Mirrored mode, where the game is displayed backwards and your inputs have to be typed in reverse. Might be fun (for some definition of fun) in one of those obnoxious easter-egg sidequests. (Do they count as easter eggs if I list them all in the dev journal?)
- Repeating a lie to enough NPCs that it becomes true.
- Getting in an argument about the oxford comma with an NPC, who refuses to give you a list of items unless you ask for it correctly.