This blog tutorial provides a step-by-step guide on building a simple two-player racing game using Go and the PubNub Go SDK, which facilitates real-time communication essential for multiplayer games. The tutorial addresses the setup of a basic game lobby where the first player becomes the host and the second becomes the guest, with PubNub managing the exchange of player information and game data. The game involves a progress bar race, with players alternating between pressing the SPACE and RIGHT ARROW keys, and the first to reach 100% wins. The tutorial highlights the need for a robust game lobby, touches on the challenges of ensuring fair play, and provides solutions for managing player presence and game state using PubNub's channel presence feature. It also notes limitations related to terminal size and font settings and suggests restarting the game if there are issues with lobby management.