Sure! Here's an example of a simple game called "Merge Game" implemented as a single HTML file using JavaScript and enclosed within script tags. The game is designed for smartphone operation and uses pictograms for visuals.
This implementation creates a simple merge game where you can click on the canvas to add new objects with a value of 2. When two objects with the same position and value overlap, they merge and their value doubles. The score is incremented by the merged value. The game canvas is a 400x600 rectangle where the objects are displayed as colored rectangles with their respective values.