As an AI text-based model, I can provide you with a basic example of an open world jungle alien game implemented as a single HTML file with JavaScript. Please note that this is a simplified example and does not include any pictograms or complex graphics. You can copy the code and save it as an HTML file to play the game on your smartphone.
Please note that this is a very basic implementation, and you can enhance it by adding game mechanics, interactions, and more detailed graphics based on your preferences and requirements.