The gameplay of Assassin's Creed HD stayed true to the franchise's roots. Players took on the role of an Assassin, navigating through a fictionalized version of the modern-day city of Paris. The objective was to eliminate targets, known as Templars, while avoiding detection by the authorities and rival Assassins. The game featured various controls optimized for touchscreens, making it intuitive for players to maneuver their character, engage in stealth, and execute precise assassinations.