The tutorial delves into implementing an occupancy counter for multiplayer games using the Phaser API and the PubNub JavaScript SDK, specifically focusing on PubNub Presence to track real-time user counts in game channels. By displaying the number of concurrent users at each game level, developers can enhance player engagement by encouraging players to advance when they see friends on subsequent levels. The process involves setting initial text variables for occupancy display, running a checkFlag function to detect user presence changes, and utilizing the PubNub Here Now function to update occupancy counts dynamically. This approach helps illustrate the game's success and motivates players to invite others, enhancing the overall gaming experience.