Hitman: Codename 47 is the first game in the Hitman series, developed by IO Interactive and released in 2000. Players take control of Agent 47, a genetically engineered assassin trained to complete high-risk contracts around the world. The game focuses on stealth, disguises, and strategic planning to eliminate targets without being detected. Set across multiple international locations, it introduced the core gameplay mechanics that later defined the Hitman franchise and its signature assassination style.