Bogeyman

It's rare when an IF game is presented exactly right, every portion designed perfectly well to give a uniform presentation. Liza Daly's Harmonia is sort of the standard for this type of presentation.

I think Bogeyman has achieved that level of quality. The layout, fonts, sound, and color scheme give gravitas and a haunting sense of dread to the story.

And the storyline fits the presentation, with interactions that lead you to believe that you can identify with your character, followed up with choices that pit your beliefs against themselves.

An effect, but disturbing, game. One of my go-to games when introducing IF to people.