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FishNet
What it is
FishNet is a networking solution for Unity games with a client-server model and a server-authoritative design. It supports dedicated servers, while developers can also run a server and client together during development and testing. Teams can choose a server host, including self-hosting or player hosting, and the free plan has no CCU caps or paywalls. Its high-level API synchronizes game state, logic, and objects; events and inheritance provide lower-level options. 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 clients to pass authentication before communicating with a game server. Communication is unencrypted by default; FishyUnityTransport can enable DTLS for UDP or TLS for WebSocket. FishNet Pro costs $50 once and adds lag compensation and automatic removal of sensitive server logic from client builds. Prediction collider components currently support primitive shapes such as boxes, spheres, and circles.
For and against
For
- Free plan has no CCU caps or paywalls.
- Supports dedicated and developer-run servers.
- Built-in prediction includes desynchronization smoothing.
- Addressables support covers network scenes and prefabs.
Against
- Communication is unencrypted by default.
- Prediction colliders support primitive shapes only.
- Community integrations are not officially maintained or guaranteed.
The verdict
FishNet combines server-authoritative networking with developer-selected hosting and a broad set of networking tools. Check its primitive-only prediction collider limit and enable transport encryption if needed.
Who it suits
FishNet suits Unity developers building multiplayer games who want to choose their hosting model and use built-in prediction tools. Teams needing Pro features can buy them for $50 once.
Plans and prices
FishNet
No CCU caps or CCU paywalls · Unity networking solution
Read 4 Oct 2026 · fish-networking.gitbook.io
FishNet Pro
Includes Pro features; lifetime access to future updates via Asset Store
Read 4 Oct 2026 · assetstore.unity.com
On the record
- Addressables
- FishNet lists built-in Addressables support for network scenes and prefabs.fish-networking.gitbook.io · read 4 Oct 2026
- Client-side prediction
- FishNet includes built-in client-side prediction and components for desynchronization smoothing and Rigidbody prediction.fish-networking.gitbook.io · read 4 Oct 2026
- Compatibility
- The FishyUnityTransport documentation lists Windows, macOS, Linux, Web, iOS, Android, Xbox, PlayStation, and Nintendo as supported systems.fish-networking.gitbook.io · read 4 Oct 2026
- 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.fish-networking.gitbook.io · read 4 Oct 2026
- 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.fish-networking.gitbook.io · read 4 Oct 2026
- Limit
- The documentation says its prediction collider components currently support only primitive shapes such as boxes, spheres, and circles.fish-networking.gitbook.io · read 4 Oct 2026
- Networking API
- Its high-level API synchronizes state, logic, and objects, and its events and inheritance offer lower-level functionality.fish-networking.gitbook.io · read 4 Oct 2026
- Other features
- FishNet lists buffered remote calls, area-of-interest controls, reliable and unreliable remote calls, configurable SyncTypes, tick-based timing, and broadcasts.fish-networking.gitbook.io · read 4 Oct 2026
- Pro features
- FishNet Pro includes lag compensation and automatic code stripping, which removes sensitive server logic from client builds.fish-networking.gitbook.io · read 4 Oct 2026
- Purpose
- FishNet is a free networking solution for Unity games.fish-networking.gitbook.io · read 4 Oct 2026
- Security
- The documentation describes customizable authenticators that require a client to pass authentication before communicating with the game server.fish-networking.gitbook.io · read 4 Oct 2026
- 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.fish-networking.gitbook.io · read 4 Oct 2026
- Support
- The docs direct users to troubleshooting guides and the official Discord community for help, and say Pro purchases can include priority support.fish-networking.gitbook.io · read 4 Oct 2026
- 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.fish-networking.gitbook.io · read 4 Oct 2026
