AI NPC Dialogue System + World Knowledge for Unity | MetaMix3D
MetaMix3D
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Create smart NPCs in Unity with plug-and-play dialogue, JSON-based offline conversations, and world knowledge support. Build interactive characters that can talk, answer questions.Built and tested in Unity 6.3 LTS with URP.Configured for URP and uses the included MetaMix3D PC Render Pipeline Asset. The core NPC dialogue system, offline JSON workflow.After import into a fresh project, TextMesh Pro Essential Resources may need to be imported.The included demo scene may use Unity Starter Assets / starter kit character content for demonstration purposes only.MetaMix3D AI NPC Dialogue System + World Knowledge for Unity helps developers create interactive NPCs that players can actually talk to.This package is designed for developers who want a practical NPC dialogue workflow without building everything from scratch. It includes a plug-and-play NPC setup, dialogue UI, JSON-based offline dialogue support, and world knowledge integration for smarter conversations.You can drag and drop NPC prefabs into your Unity scene, connect dialogue data, and start testing NPC conversations quickly.Check Documentation Setup Guides: Wiki TutorialCheck Video Tutorial in Details: Video TutorialWhat this package includesAI NPC dialogue systemWorld knowledge systemJSON-based offline dialogue supportPlug-and-play Unity setupNPC prefab workflowDialogue UI / chat componentExample dialogue filesSample NPC prefabsDemo sceneDocumentationMain features:Plug-and-play setupAdd an NPC prefab to your scene, assign dialogue data, and test conversations inside Unity.JSON-based offline dialogueUse local JSON files to define dialogue content and response flow for offline mode.World knowledge supportNPCs can answer questions related to game locations, lore, and environment-specific knowledge.Unity integrationSimple inspector workflow for assigning NPC dialogue, chat UI, and interaction settings.Flexible workflowSupports both:Offline local dialogue modeExtended AI-based workflow when connected to your external backend--Example use cases--This package is suitable for:RPG gamesAdventure gamesStory-driven gamesOpen world projectsFantasy NPC systemsSci-fi NPC systemsDialogue-driven gameplayWhy use this package?Instead of manually building NPC conversation logic, chat UI, prefab setup, JSON dialogue loading, and game-side interaction handling, this package gives you a working starting point that can be customized for your project.It is made for developers who want faster implementation and a clearer workflow for interactive NPCs.(Optional) AI Cloud ModeThis package includes an offline dialogue system using JSON files that works entirely inside Unity without any internet connection.For developers who want more advanced AI-powered NPC conversations, the system can optionally connect to an external AI backend.Online AI features may require:API key configurationInternet connectionSubscription or usage-based billing depending on the external service usedOffline mode works independently and does not require any external services.More information about the cloud service can be found here:Wiki/CloudImportant setup notes:• After importing the package into a fresh project, TextMesh Pro Essential Resources may need to be imported from Window > TextMeshPro > Import TMP Essential Resources.• The included demo scene may use Unity Starter Assets / starter kit style character content for demonstration purposes only.Engine CompatibilityUnity 2021.3 LTS or newerRender Pipeline CompatibilityCompatible with Built-in, URP, and HDRP depending on project setup and included demo assetsCore Systems IncludedNPC prefab systemNPC chat componentDialogue UIJSON dialogue loaderWorld knowledge integrationSample setup workflowExample project sceneDialogue SystemJSON-based offline dialogue filesEditable dialogue structureSupports local dialogue setup inside Unity workflowNPC SetupDrag-and-drop NPC prefab workflowInspector-based component configurationChat component assignmentDialogue file assignmentSample ContentExample NPC prefabsExample JSON dialogue filesExample sceneDocumentationScriptsC# scripts includedUnity inspector workflow supportedRuntime dialogue interaction logic includedDocumentation IncludedQuick start guideSetup guideExample usage documentationTarget UsersIndie developersPrototype teamsTechnical designersDevelopers building interactive NPC experiences





