 Unlike previous installments of the series, it is not possible to change a unit class using special items, although upgrades for each class are available at levels 15 and 30.Characters are differentiated by their personal statistics such as agility, intelligence, morale, and strength.Each choice made by the player during gameplay affects a scale which tilts towards either "factual" (red) or "fictional" (blue), depending on how the choices made affirm or contradict the events depicted in the novel.