Arcade game machines have evolved beyond their classic, fixed designs to embrace user-generated content (UGC) and mods, allowing players to personalize their gaming experience. Modern arcade cabinets often feature modular hardware and open software platforms, enabling enthusiasts to create custom levels, characters, or even entire games. Some machines support USB or online connectivity for uploading player-made content, while others use community-driven platforms where mods can be shared and downloaded. Developers also release official modding tools, encouraging creativity while maintaining system stability. This trend revitalizes arcade gaming by blending nostalgia with endless innovation, fostering a vibrant community of creators and players. From custom skins to entirely new gameplay mechanics, UGC ensures arcade machines remain dynamic and engaging in the digital age.