Also, within each individual smaller story piece, a player has internal choices that affect the outcome of that smaller tale. For example, a norn player is character is asked at creation to decide if the most important virtue of a norn is cunning, instinct or strength. Each of those answers defines a storyline, and within that storyline are choices.
A norn who chooses strength has the option in fighting their enemy; whether to assist in forging a powerful new weapon, or to summon the power of a Spirit of the Wild to increase their ability. Those two options give the player different objectives, different methods (and stories related to overcoming those objectives), as well as a different type of gameplay when they do face down their enemy in that storyline – with whichever advantage they chose to obtain.