A game developer designs and creates video games for computers, consoles, and mobile devices. They conceptualize and execute game mechanics, storylines, characters, and graphics, often using programming languages like C++ or Java. They work closely with other professionals such as game designers, artists, and testers to ensure a cohesive and engaging user experience. They also debug and refine the game based on user feedback. Besides, they might be involved in developing game updates or expansions post-launch. Their role requires a blend of technical skills, creativity, and a deep understanding of the gaming industry and player preferences.