AI NPC Characters

Build intelligent non-player characters powered by large language models. Learn to create dynamic dialogue systems, behavior trees enhanced with AI, persistent memory, voice integration, and best practices for shipping AI-driven NPCs in production games.

Start Course → Jump to Dialogue
6
Lessons
30+
Examples
~2hr
Total Time
★
Hands-On

Course Lessons

Follow the lessons in order or jump to any topic you need.

Beginner

1. Introduction

The evolution of game NPCs, how LLMs change everything, architecture overview, and what you will build in this course.

10 min read →
 Intermediate

2. Dialogue Systems

Build LLM-powered dialogue with context windows, persona prompts, guardrails, branching conversations, and emotional tone.

15 min read →
 Intermediate

3. Behavior AI

Combine behavior trees with LLM reasoning. Create NPCs that plan, react to world state, and adapt to player actions.

15 min read →
 Intermediate

4. Memory

Give NPCs persistent memory using vector databases, summarization chains, and episodic recall for long-term relationships.

15 min read →
 Advanced

5. Voice Integration

Add real-time text-to-speech and speech-to-text so players can talk to NPCs naturally with low-latency voice.

20 min read →
 Advanced

6. Best Practices

Latency budgets, content filtering, cost management, fallback systems, testing strategies, and shipping AI NPCs safely.

15 min read →