Fish-Net
Open-source Unity multiplayer networking solution built for performance. Offers client-hosted and dedicated server support with prediction, lag compensation, and observer patterns.
Our Verdict
The strongest free Unity networking stack in 2025 if you can tolerate sparse docs and a fast-moving API.
Pros
- Free Pro tier via Patreon unlocks advanced features
- Built-in client prediction and lag compensation
- Active Discord with responsive lead developer
- Outperforms Mirror in stress tests on most scenarios
Cons
- Documentation is improving but still incomplete
- Steeper learning curve than Mirror for newcomers
- Unity-only, no multi-engine support
- Rapid version changes can break existing projects
When to Use Fish-Net
Good fit if you need
- Client-hosted multiplayer Unity game with lag compensation
- Prediction-based movement for fast-paced competitive game
- Observer pattern for spectator mode in an online title
- Dedicated server deployment for a Unity battle-arena game
- Free alternative to Mirror for a production Unity multiplayer title
Pricing
Price wrong?Fish-Net Pricing
- Pricing Model
- free
- Free Tier
- Yes
- Entry Price
- —
- Enterprise Available
- No
- Transparency Score
- —
Beta — estimates may differ from actual pricing
Estimated Monthly Cost
$25
Estimated Annual Cost
$300
Estimates are approximate and may not reflect current pricing. Always check the official pricing page.
Lock-in Assessment
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