As an AI language model, I can help you create a simple text-based game set in Los Angeles with JavaScript code that you can run within a single HTML file. However, please note that creating a fully immersive game like GTA 5 is beyond the scope of a simple text-based game. Nevertheless, I can provide you with a basic framework to get started.
Here's an example of a simple text-based adventure game set in Los Angeles:
This HTML file contains a script that defines a basic game loop, allowing the player to explore different location2s in Los Angeles by typing commands. You can expand upon this code by adding more location2s, actions, and implementing specific game elements if desired.
Please note that this is a very simplified version of a game and does not include complex graphics or pictograms. However, you can enhance the game by adding visual elements and utilizing libraries or frameworks specifically designed for game development.