This guide demonstrates how to set up a multi-agent workflow using CrewAI to generate, review, and validate a Python game. It introduces common CrewAI patterns—crews and Flows—to help structure multi-agent systems with both autonomous collaboration and precise control. The example uses the game-building example as a hands-on way to learn how these patterns are applied in practice. The guide covers prerequisites, environment setup, project structure, defining agents, outlining tasks, providing game context, implementing the GameBuilderCrew class, orchestrating a Crew with Python, understanding the Crew pattern, and running the game builder crew.