Arcade machines have evolved significantly, especially in multiplayer gaming, where synchronization is critical for a seamless experience. In networked setups, arcade machines use several techniques to ensure smooth gameplay:

1. Frame Synchronization: Games often rely on lockstep synchronization, where all machines process the same inputs at the same frame. This ensures consistency but requires stable network conditions.

2. Input Delay Handling: To compensate for latency, some systems buffer inputs slightly, allowing time for all players' actions to sync before rendering the next frame.

3. Rollback Netcode: Advanced systems use predictive algorithms (like rollback netcode) to simulate player actions locally. If discrepancies occur, the game "rolls back" and corrects the state.

4. Server Authority: In client-server models, a central server validates and broadcasts game states to all machines, reducing desync risks.

5. Optimized Network Protocols: Low-latency protocols and dedicated hardware minimize delays, crucial for fast-paced arcade games.

These methods ensure that multiplayer arcade games remain responsive and fair, even over networks. Developers balance synchronization precision with performance to deliver the best player experience.