Galactic Civilizations I: Ultimate Edition [Online Game Code] Replayability - Galactic Civilizations is readily playable by casual gamers and includes a powerful, sophisticated AI and game mechanics that make each gaming experience different and highly addictive. Immersive Storyline - Playing as the leader of humanity, you have a rich and deep heritage to lead the human race and become one of the principal species of the universe. Multiple, Balanced Paths to Victory - Achieve victory using military strength, economic might, or political power.