Arcade game manufacturers employ a variety of strategies to prevent unauthorized copying or piracy, safeguarding their intellectual property and revenue. One common method is hardware-based security, such as custom chips or encrypted circuit boards, which are difficult to replicate. Many manufacturers also use proprietary software with unique encryption keys, making it challenging for pirates to duplicate games without access to the original code.

Additionally, manufacturers often implement online verification systems, requiring arcade machines to connect to a server for authentication. This ensures only licensed copies can operate. Legal measures, including copyright enforcement and lawsuits against counterfeiters, further deter piracy. Some companies even embed hidden code or watermarks to trace pirated copies back to their source.

By combining technological and legal solutions, arcade game manufacturers effectively reduce piracy risks, ensuring fair competition and continued innovation in the industry.