Unity middleware

16 reusable middleware libraries for Unity, indexed by capability.

• A* Pathfinding Project

  by Aron Granberg · Free + Pro · Free & paid · middleware

  Pathfinding system for Unity — grid, navmesh, and recast graphs with local avoidance.

  PathfindingNPC   UnityC#

• BlocksBeyondTheStars

  by marceld23 · Free · github

  A block-based 3D space crafting game: explore procedurally generated planets across many star systems, mine and craft, tame creatures, build ships, bases and your own space stations — solo or with friends. Open-source .NET server + Unity client, self-hostable.

  CraftingProcedural GenerationNetworking   C#Unity

• codex-game-studio

  by merlinhu1 · Free · github

  Codex-native CLI for AI-assisted game development, scaffolding local projects with studio roles, bounded prompts, and hard-failing validation.

  AI   TypeScriptUnityGodot

• Colyseus

  by Colyseus · Free · MIT · middleware

  Authoritative multiplayer game server for Node.js with client SDKs for many engines.

  Networking   Node.jsTypeScriptUnityGodotDefold

• FMOD

  by Firelight Technologies · Free indie + paid · Free & paid · middleware

  Adaptive audio engine and authoring tools for games across every major engine and platform.

  Audio   UnityUnrealGodotC++WindowsAndroidiOS

• frontend

  by TaloDev · Free · github

  Talo's dashboard - manage your game and data from one clean, powerful and accessible place

  Analytics   TypeScriptUnityGodot

• godot-game-studio-agent

  by deist-huntedperson464 · Free · github

  Automate game production in Godot, Unity, and Unreal with a studio-style agent that manages workflows, project documentation, and engine-specific quality checks.

  AI   UnityUnrealGodot

• Ink

  by inkle · Free · MIT · middleware

  inkle's scripting language for writing interactive narrative, branching stories, and game dialogue.

  Dialogue   UnityWebC#

• Mirror

  by Mirror Networking · Free · MIT · middleware

  High-level networking library for Unity multiplayer games — replication, RPCs, and sync.

  Networking   UnityC#

• Nakama

  by Heroic Labs · Free · Apache-2.0 · middleware

  Open-source server for social and realtime games and apps — auth, chat, matchmaking, leaderboards.

  NetworkingAuthenticationLeaderboards   GoUnityGodotUnreal

• Photon Engine

  by Exit Games · Free tier + paid · Commercial · middleware

  Multiplayer networking and real-time services for games across many engines and platforms.

  Networking   UnityUnrealC#C++

• unity-ai-bridge

  by aiseog3121 · Free · github

  Enable direct AI control of the Unity Editor for scene inspection, material editing, testing, and performance profiling without extra setup.

  AI   C#Unity

• unity-kiss-mcp

  by german-krasnikov · Free · github

  MCP server for controlling Unity Editor from Claude Code. TCP bridge, 98 tools, plugin system, token-optimized, in-editor chat.

  AIAnimation   C#Unity

• unityxclaude

  by agustedire542 · Free · github

  Control Unity Editor with Claude via MCP to create scenes, edit components, manage assets, run builds, and execute C# from chat

  AIAutomation   C#Unity

• Visual Shader Normal Combine Node

  by Foyezes · Free · godot

  Combine two normal maps using this node. Includes UDN, Whiteout, RNM and Unity blending methods.

  Rendering   GodotUnity

• Yarn Spinner

  by Yarn Spinner (Secret Lab) · Free · MIT · middleware

  A tool for building interactive dialogue in games — write conversations in the Yarn language and run them in your engine.

  DialogueNPC   UnityC#