Netcode for GameObjects vs Normcore

Netcode for GameObjects is Unity’s high-level networking library for synchronizing GameObjects and world data during multiplayer sessions. Unity describes it as suited to games with smaller player counts and less complex game logic, including adding multiplayer to an existing GameObject-based single-player game. Networking can use client- or server-authoritative models. NetworkBehaviour components use NetworkVariables to synchronize state and RPCs to send messages over the network. Integrated scene management is enabled by default and synchronizes scenes across connected clients. Unity Transport is the default transport, while Unity Relay can provide Relay networking for GameObject and MonoBehaviour workflows. Unity Multiplayer Services sessions are compatible with the package, which handles gameplay state replication after players connect. The package is free, but installation requires an active Unity account with a valid license, a supported Unity version, and an existing project. Supported platforms listed include Windows, macOS, Linux, iOS, Android, XR platforms on those systems, most closed platforms, and WebGL with specified package versions. There is no matchmaking functionality; developers must use third-party services for matchmaking. A full client-side prediction and reconciliation system must also be built by the developer.

Normcore is a networking solution for Unity multiplayer applications. It provides networked physics, persistent spaces, voice chat and XR support, with EasySync for synchronizing properties without code; that component can also be converted to a C# RealtimeComponent. Voice over IP and audio streaming can be added to a prefab using a Unity component. For Unity WebGL builds, it supports multiplayer and voice chat through WebRTC without code modifications. The service is aimed at desktop, console, mobile, VR, AR and WebGL projects, with game servers across cloud providers that select regions based on client latency. Normcore Private offers deployment on dedicated cloud servers or on-premises hardware, with support for custom server-side C# or C++ plugins. Its Public plan is free and includes 100 room hours and 120GB of bandwidth per month. Pro costs $49 a month and includes 10,000 room hours and 3TB of bandwidth. Unlimited costs $49 a month plus usage beyond 10,000 room hours and 3TB of bandwidth.