If you're looking for a game engine with low-latency cloud hosting, matchmaking and room management features for building multiplayer games that scale, Photon Engine is a good option. Photon Engine is a global, cross-platform backend service that makes it easier to build multiplayer games for Android, iOS, .NET and other platforms. It offers advanced state synchronization, deterministic performance and real-time APIs for matchmaking and room management. The service also includes low-latency cloud hosting with servers in many regions, a good option for high-performance multiplayer games.
Another strong contender is Azure PlayFab from Microsoft. PlayFab is a full LiveOps back-end platform that supports live games on multiple platforms, including clouds and game engines. It includes powerful multiplayer services, analytics, live operations, matchmaking and room management. Azure PlayFab has flexible pricing and strong security and compliance features that are important for keeping multiplayer games secure and fun.