Players crave more interactivity from NPCs and 81% are willing to pay more for games featuring AI-driven NPCs (Future of NPCs report). Increase play time, retention, and ARPU with Inworld, the most advanced AI Character Engine.

The Inworld AI NPC Engine powers experiences from Team Miaozi (NetEase Games, Niantic, Alpine Electronics, LG Uplus, and more.

VERSION

This is version 3.0 of our Unity SDK which represents the most up-to-date and full-featured version of the Inworld Character Engine. It is compatible with all platforms.

There is a Lite version of 3.0 that supports lightweight projects with a significantly smaller download size. It does not include any character models from ReadyPlayerMe or Inworld avatars, so is suitable for developers with capabilities to import their own character skeletons and animations in Unity. Ideal for WebGL deployments or projects where package size is a consideration.

To access version 2.0 of the Unity SDK (for previous Unity Asset Store users of the Inworld SDK), please visit our 2.0 Legacy listing. To upgrade from 2.0 to 3.0, please check our documentation.

WHY USE INWORLD?

💫 Create living, breathing characters powered by advanced AI

Inworld AI characters have their own personalities, thoughts and behaviors based on the profiles you create for them. They’ll come up with their own responses, feel emotions and develop memories – just like real-life characters would.

🧠 Go beyond dialogue

Unlike chatbots, Inworld powers multimodal character expression by orchestrating multiple machine learning models that are designed to mimic the full-range of human communication. Smart NPCs can learn and adapt, navigate relationships with emotional intelligence, have memory and recall, and are capable of autonomously initiating goals, performing actions, and following their own motivations that can drive the narrative and integrate with the broader player experience.

👕 Compatible with any avatar or character design

Inworld powers characters' brains and dialogue, meaning that you can use any character design or avatar system, 2D or 3D.

🪄 No coding required

To build a new character, simply describe your character in natural language and use our drop-downs and draggable sliders to configure their traits. It’s intuitive and easy.

👋 Natural interactions

Players can communicate naturally with your characters like never before. There’s no need to script dialogue and behavior trees – just create your characters and let Inworld’s powerful character AI engine do the rest.

🏗️ Highly configurable

Tailor your character’s identity, motivations, role, hobbies and interests, personality, mood, personal and common knowledge, dialogue style and more.

🚀 Production ready

Embed and deploy your AI characters immediately into your game or other immersive realities, from metaverses to VR/AR, web experiences, and other virtual environments. We offer a comprehensive package for Unity, and a flexible API so you can bring your characters to any experience, regardless of the platform.

More info

Create characters in Inworld Studio

The most advanced platform for AI NPCs:

Create personality-driven, contextually-aware characters that are powered by 30+ AI models designed to be lifelike, realistic, and believable. Inworld is built for performance and scale, delivering low latency for real-time experiences. Inworld goes beyond large language models like ChatGPT and adds configurable safety, custom knowledge, multimodality, and more.

Built by a world-class team:

Get decades of AI expertise from a team that sold their previous conversational AI company to Google. Inworld was founded in 2021 and has raised $70 million from Microsoft, Intel, Kleiner Perkins, Bitkraft, and others.

Low code solution:

Customize everything from your AI character’s goals and motivations, memories, and knowledge to speaking style and voice, all using natural language. Drag and drop characters into your Unity experience.

Inworld powers characters' brains and dialogue, meaning that you can use any character design or avatar system, 2D .

This asset is governed by a custom EULA - find it here.

AI NPC Engine v3 - Dialogue & Behavior for Unity - Inworld