Arcade game manufacturers prioritize compatibility with third-party peripherals to enhance user experience and expand market reach. They achieve this through standardized communication protocols like USB or GPIO interfaces, ensuring seamless integration. Manufacturers often release detailed technical specifications and SDKs (Software Development Kits) for peripheral developers, enabling them to design compatible devices. Rigorous testing is conducted to verify functionality across different hardware configurations, including joysticks, trackballs, and light guns. Additionally, many manufacturers adopt open standards or modular designs, allowing easy adaptation of third-party components. Some even collaborate with peripheral makers to certify products, ensuring reliability. By maintaining backward compatibility and supporting community-driven modifications, arcade systems remain versatile for both commercial and home use.