Explain the significance of networking in multiplayer games and the challenges of implementing a robust and scalable multiplayer system.

Networking is essential in multiplayer games for synchronizing game state across multiple players. Challenges include handling latency, ensuring consistent and fair gameplay, and managing the server load. Implementing a robust system involves techniques like client-server architecture, state interpolation, and prediction to mitigate latency effects, and load balancing to distribute server traffic. Security measures are also critical to prevent cheating and ensure a fair gaming environment.