A Game Physics Developer uses mathematical models and algorithms to simulate physical laws in video games. They design and implement physics code to replicate real-world elements such as gravity, collision, and fluid dynamics, adding realism and immersion. Their work affects how characters move, how objects behave, and how the game world responds to player actions. They collaborate with game designers to enhance gameplay, troubleshoot and optimize code for performance, and often work on creating custom physics engines tailored to specific game requirements. Their role is essential in creating a believable and engaging virtual environment.