This is the kind of thing I really like to see in Ectocomp: an experiment that stretches the boundaries of IF in interesting ways.
In this game, you play a Japanese ghost who frightens people by removing its face. There is an expansive map with different locations to visit and numerous NPCs.
What is clever here (and which I like) is that you have a to-do list you can visit at any time that tells you what your next steps are (without telling you how to accomplish them) and gives hints of what else lies in the game (with obfuscated 'Bonus' achievements).
It also includes a text-entry puzzle, which seems to be case-dependent (since an answer I tried with lowercase turned out to be the right answer when written in uppercase). The game does provide progressive hints, though.
I think the concepts in this game are interesting and worth trying out in a larger Twine game.