Sure! Here's an example of a simple farming RPG game implemented as a single HTML file using JavaScript and enclosed in script tags. It is designed for smartphone operation and uses pixelated pictograms for graphics. Please note that this is a simplified version for demonstration purposes and can be further enhanced based on your requirements:
In this simple farming RPG game, the player starts with a certain amount of money, seeds, and crops. They can choose to either plant seeds or harvest crops by tapping on the respective options displayed on the screen. The game loop continuously updates the screen with relevant information based on the current game state. Touch events are used to trigger actions. Feel free to enhance the game mechanics, graphics, and add more features as needed.