Song of Bloom
Song of Bloom tells the story of a young person that is hallucinating. It begins as an abstract story, and eventually reveals the thoughts and development of the protagonist. The game is non-linear, and begins from zero, each time the player finishes one of the 18 scenes. These scenes give hints to each other, and build up a complex, tree like structure, that is the center piece of the game. They are shown as a literal tree and serve as some kind of main menu and map.