PlayFab

Photon Engine

Photon Engine provides a cloud‑based backend as a service that lets developers add real‑time multiplayer, matchmaking, and voice chat to games without managing servers. It supports Unity, Unreal, .NET, HTML5 and native mobile SDKs, handling scaling, latency optimization, and cross‑region routing. The service offers a free tier for prototyping and paid plans for production, with built‑in analytics, server‑side logic, and extensive documentation. Its global network ensures low latency connections for players on Android, iOS, Windows, macOS, and web browsers.

Nakama

Nakama, built by Heroic Labs, is an open-source game backend server that handles the infrastructure studios would otherwise build themselves: real-time multiplayer, matchmaking, leaderboards, in-game chat, and social features. Its server logic is customizable through JavaScript, Go, or Lua, and it has been used by studios including Electronic Arts, Paradox Interactive, Remedy, Zynga, and Bandai Namco. Teams can self-host Nakama for free using the open-source server, or run it on Heroic Cloud, a managed offering with usage-based pricing scaled by CPU allocation that removes DAU, MAU, and CCU limits. Client SDKs cover Unity, Unreal, Godot, JavaScript, and native mobile platforms, and the server requires a Postgres wire-compatible database such as CockroachDB.

Epic Online Services

Epic Online Services (EOS) provides a comprehensive set of cloud‑based tools that let developers add multiplayer, authentication, achievements, leaderboards, and more without building their own backend. The SDK integrates with popular engines like Unreal and Unity and works across consoles, PC, and mobile devices. EOS is free to use, scales automatically, and includes ready‑made services such as matchmaking, voice chat, and anti‑cheat, allowing studios to focus on gameplay while leveraging Epic's global infrastructure.

open-match

Open Match is an open‑source framework that lets game developers build flexible, high‑performance matchmaking services. It runs on Kubernetes and provides a pluggable architecture for custom matchmaking logic. Designed for modern multiplayer titles, Open Match integrates with existing game back‑ends via gRPC and offers observability through Prometheus, making it easy to scale and monitor large player pools.