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FishNet

fish-networking.gitbook.io

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Spec score 8.7 #3 of 29 in Game Networking Middleware

What it is

FishNet is a networking solution for Unity games using a client-server model and a server-authoritative design. It supports dedicated servers, while developers can also run a server and client together for development and testing. Users may choose a host, including self-hosting or player-hosted servers, and the free plan has no CCU caps or paywalls. Its high-level API synchronizes state, logic, and objects; events and inheritance provide lower-level functionality. Built-in client-side prediction includes desynchronization smoothing and Rigidbody prediction, and Addressables support covers network scenes and prefabs. Other listed tools include buffered remote calls, area-of-interest controls, configurable SyncTypes, tick-based timing, and broadcasts. Customizable authenticators can require client authentication before server communication. Communication is unencrypted by default; FishyUnityTransport can enable DTLS for UDP or TLS for WebSocket. FishNet costs nothing. FishNet Pro costs $50, paid once and adds lag compensation and automatic removal of sensitive server logic from client builds. The documentation says prediction collider components currently support primitive shapes such as boxes, spheres, and circles.

Spec sheet

Purpose
FishNet is a free networking solution for Unity games.Read 4 Oct 2026 · fish-networking.gitbook.io
Integrations
The community integration list includes voice, server hosting and lobby tools, gameplay extensions, utilities, and Steamworks wrappers; the project says it does not officially maintain these assets or guarantee their support.Read 4 Oct 2026 · fish-networking.gitbook.io
Security
The documentation describes customizable authenticators that require a client to pass authentication before communicating with the game server.Read 4 Oct 2026 · fish-networking.gitbook.io
Support
The docs direct users to troubleshooting guides and the official Discord community for help, and say Pro purchases can include priority support.Read 4 Oct 2026 · fish-networking.gitbook.io
Addressables
FishNet lists built-in Addressables support for network scenes and prefabs.Read 4 Oct 2026 · fish-networking.gitbook.io
Client-side prediction
FishNet includes built-in client-side prediction and components for desynchronization smoothing and Rigidbody prediction.Read 4 Oct 2026 · fish-networking.gitbook.io
Compatibility
The FishyUnityTransport documentation lists Windows, macOS, Linux, Web, iOS, Android, Xbox, PlayStation, and Nintendo as supported systems.Read 4 Oct 2026 · fish-networking.gitbook.io
Hosting and concurrency
FishNet says users can choose any server host, including self-hosting or letting players host, and that it has no CCU caps or paywalls.Read 4 Oct 2026 · fish-networking.gitbook.io
Limit
The documentation says its prediction collider components currently support only primitive shapes such as boxes, spheres, and circles.Read 4 Oct 2026 · fish-networking.gitbook.io
Networking API
Its high-level API synchronizes state, logic, and objects, and its events and inheritance offer lower-level functionality.Read 4 Oct 2026 · fish-networking.gitbook.io
Other features
FishNet lists buffered remote calls, area-of-interest controls, reliable and unreliable remote calls, configurable SyncTypes, tick-based timing, and broadcasts.Read 4 Oct 2026 · fish-networking.gitbook.io
Pro features
FishNet Pro includes lag compensation and automatic code stripping, which removes sensitive server logic from client builds.Read 4 Oct 2026 · fish-networking.gitbook.io
Server model
FishNet is server authoritative by design and supports dedicated servers, while also allowing users to act as both server and client for development and testing.Read 4 Oct 2026 · fish-networking.gitbook.io
Transport encryption
The FishyUnityTransport page says communication is unencrypted by default and can use DTLS for UDP or TLS for WebSocket when encryption is enabled.Read 4 Oct 2026 · fish-networking.gitbook.io

Plans and prices

FishNet Free No CCU caps or CCU paywalls · Unity networking solution Read 4 Oct 2026 · fish-networking.gitbook.io
FishNet Pro $50, paid once Unity Asset Store listing shows $50 Includes Pro features; lifetime access to future updates via Asset Store Read 4 Oct 2026 · assetstore.unity.com

Every FishNet plan and price →

Strong points and limits

Strong points

  • Free plan has no CCU caps or paywalls
  • Supports dedicated and developer-run servers
  • Built-in client-side prediction
  • Addressables support for network scenes and prefabs
  • Authentication can be required before communication

Limits

  • Communication is unencrypted by default
  • Prediction collider components support primitive shapes only
  • FishNet Pro costs $50, paid once

Who it suits

FishNet suits Unity game developers who need a client-server networking solution and want to choose or operate their own host. Its free plan has no CCU caps, while Pro adds lag compensation and automatic code stripping.

Verdict

FishNet specifies server hosting options, prediction tools, authentication, and transport encryption choices. Note that encryption is off by default and prediction collider support is limited to primitive shapes.

Where Specifiction places it

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