HQ Trivia, a popular live game show app, revolutionized the quiz/trivia market by enabling players to compete in real-time against millions of others for monetary prizes. Building a similar app presents technical challenges such as scaling for massive user volumes, synchronizing question displays, collecting real-time responses, and managing answer tallies instantaneously. This tutorial demonstrates how to create a basic HQ demo app using PubNub, a real-time data stream network that simplifies these tasks. The app features two interfaces: an Admin Interface, where questions are published and results are managed, and a Player Interface, where users engage with the quiz. The guide details the setup and implementation of both interfaces, including PubNub's setup, security measures using Access Manager, and user interface design. Additionally, it outlines how the app handles question publishing, answer collection, result calculation, and data display to ensure a seamless gaming experience for users.