Follow this complete workflow to build a 3D open‑world game using AI coding agents, Blender, and voice NPCs.
Based on: How Are People Making Games Like This? by Traversy Media
▶ Watch the source video on YouTube
Have you ever watched someone build a full 3D game in their browser and wondered how on earth they actually did that? Not a tutorial project — a real, explorable world with realistic textures, animated characters, and NPCs you can actually talk to. You have no idea where they even started, and every time you try to research it, you get buried in jargon about game engines, rigging, and shaders without a single clear path forward.
Here is the problem most aspiring game builders face: the gap between curiosity and your first working game feels enormous. You do not know if people are modding existing games, porting them to browsers, reverse-engineering source code, or truly building from scratch. You do not know which AI tools are worth paying for, which models are strong enough to handle complex tasks, or how to manage multiple parallel build sessions without everything falling apart. That confusion alone stops most people before they ever write a single prompt.
Imagine instead having a clear, ordered workflow. You fire up Claude Code on a pro plan, write your first world-building prompt, kick off a Blender session for realistic textures while you go for a walk, wire in character animations from Mixamo, add spatial footstep audio through ElevenLabs, and then layer in a conversational AI agent so your NPCs actually respond to what you say — and remember it. By the end of that process, you have a playable, shareable browser game that looks nothing like a beginner project.
Brad Traversy of Traversy Media spent three weeks and significant token budget building six to eight original games to map out exactly how this workflow operates. He burned through the confusion so you do not have to. He tested Claude Opus on the max plan, compared it against other models, figured out how sub-sessions prevent conflicts, and personally integrated Agora's real-time network for under-70-millisecond NPC voice conversations. This is not theory — he shipped a post-apocalyptic open-world game with voice-reactive NPCs using this exact process.
This checklist captures every step of Brad's workflow in the order he actually uses it. Download it, open your AI agent of choice, and start building your first 3D browser game today.
Every checklist item comes with actionable notes to guide you — things like "Don't forget to do this before you start," "Avoid this common mistake," or "Set a reminder for 30 days out." Nothing vague, just clear next steps.
+ 25 more action items inside...
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