As an AI text-based model, I am unable to directly create or provide you with a complete HTML game file with high graphics like GTA. However, I can provide you with a simple example of a text-based game implemented using JavaScript within an HTML file. Please note that this example will not have high graphics or an overworld similar to GTA, but it can serve as a starting point for your game development.
This is a basic template for a text-based game implemented within a single HTML file. You can expand on this template by adding more game mechanics, graphics, and features using JavaScript and CSS. Please note that implementing a graphically intense game like GTA would require significantly more code and development resources.