Eidolon

This is a very large Twine game that starts out mostly linear, branches a little, and then branches a lot. It includes a large area with a variety of rooms, including a clever means of transportation (Spoiler - click to show)the curious door/button combo. The genre is subtle horror/mystery, and the writing is evocative and sticks with you.

The lack of a save feature is annoying; as a casual gamer, I can't finish the game in one sitting, and it's difficult to juggle tabs to keep the game open throughout the day. This is one game I would like to finish.