Sure! Here's a simple game called "Super Chroma Bros" implemented as a single HTML file using JavaScript and enclosed in script tags:
Super Chroma Bros
This game is a basic version of a platformer game where you control a player character (represented as a red block) and try to avoid colliding with an enemy character (represented as a blue block). You can use the left and right arrow keys on your smartphone to move the player left or right.
Note: Since it is assumed to be a smartphone operation, the controls are handled using the window's keydown event. However, on some mobile browsers, this may not work as expected, and you may need to use touch events instead for accurate control on smartphones.
Feel free to modify and enhance the game as per your requirements and add pictograms or additional features to make it more interactive and enjoyable.