Sure! Here's a simple text-based game prototype called "The Great War" implemented as a single HTML file using JavaScript. It's designed for smartphone operation and uses pictograms for a more visual experience. Please note that this is a simplified implementation meant to demonstrate the basic structure of a game.
The Great War
To play the game, you can copy this code into a new HTML file, save it with a .html extension, and open it in a web browser. When you click the "Start Game" button, it will initialize the game. Then, click the "Play Turn" button to simulate a turn or event. The game will keep track of your score, and if you fail a turn, it will display a "Game Over" message with your final score. You can start a new game by clicking "Start Game" again.
Note: This is a minimalistic example of a game and can be expanded upon to include more features, graphics, and animations based on your requirements.