Not to suggest it isn't rare for adventure games to be both as well-crafted and atmospheric as Gemini, but I'd suggest to ggreen737 and anyone who feels this way to keep checking other titles created with
Adventure Game Studio. You'd be surprised what you can find there, even among the freeware games. And it's the place where Gemini originated once.
Some of my recommendations for "edgy" experiences:
La Croix Pan - an earlier freeware game by Gemini's author Josh Nuernberger
the Blackwell series - the best known creation of Wadjet Eye Games, with some of the same cast as Gemini
Diamonds in the Rough
Downfall
