As a substantial expansion to the core RPG, Pillars of Eternity: The White March Part I (2015) integrates new, hours-long content into the main adventure, requiring the base game. You explore new snowy regions, face enhanced enemy AI, and progress to level 14. Key additions include two new companions, evolving Soulbound weapons, and multi-class talents. Crucially, this update adds Party AI scripting and the ability to respec character builds at inns, offering greater tactical control and build flexibility across the entire game.