Learn how to use the Codex CLI + GPT-5-Codex in just 5 minutes.


In this tutorial, Eason Goodale and Romain Huet show you how to build a multiplayer game with Codex — without writing a single line of code!

Timestamps:

00:00 Intro
00:50 Planning the multiplayer implementation
1:38 Using CLI commands
2:55 Implementing the plan
3:31 Deploy the game
4:20 Playing the game


To learn more and get started:

Codex: openai.com/codex
Codex CLI GitHub repo: https://github.com/openai/codex
Developer docs: developers.openai.com/codex