Sure! Here's a simple game implemented as a single HTML file using JavaScript, enclosed in script tags. The game is inspired by "People Playground" and can be played on a smartphone. It utilizes pictograms for a visual representation. Please note that this is a basic example and can be expanded upon further.
In this game, you control a red square (the player) using touch input on a smartphone. The player can move around the canvas by sliding your finger on the screen. The game loop updates the player's position and redraws the canvas to create animation.