Your Affinity choice is a defining aspect of your game. Purity focuses on preserving humanity's original form, emphasizing strong defensive units and a desire to terraform the alien world to resemble Earth. They gain bonuses to unit strength and city defenses. Harmony seeks to adapt to the alien environment, befriending alien lifeforms and utilizing their unique biology. They gain bonuses to alien unit control and Miasma immunity. Supremacy embraces cybernetic enhancements and advanced technology, aiming to transcend humanity's biological limitations. They gain bonuses to production and advanced unit upgrades. Your Affinity level unlocks powerful unique units and buildings, so consistently research technologies that contribute to your chosen path. For example, if you're pursuing Harmony, prioritize technologies in the 'Alien Sciences' branch of the Technology Web.
