Using third-party software or mods in arcade machines can have serious legal consequences. Unauthorized modifications often violate copyright laws, as they may alter or bypass proprietary software protected by intellectual property rights. Arcade machine manufacturers and game developers typically enforce strict terms of service, and tampering with hardware or software can lead to lawsuits, fines, or even criminal charges. Additionally, distributing or selling modded arcade machines may constitute fraud or breach of contract. To avoid legal trouble, always seek permission from copyright holders before making modifications and ensure compliance with local gaming regulations. Understanding these risks is crucial for arcade operators and enthusiasts who want to stay on the right side of the law.