Sure! Here's an example of a simple game implemented as a single HTML file, using JavaScript and enclosed in script tags. The game is designed for smartphone operation and uses pictograms for visual elements. When the game is finished, the user can play it.
In the provided code, the game canvas is created and visual elements are drawn using pictogram images (`emozi_all/game.png` and `emozi_all/enemy.png`). The player can control the character using arrow keys, while the enemy moves from left to right. If the player collides with the enemy, a game over alert is displayed, and the game can be reset. The game loop is implemented using the `requestAnimationFrame` function, constantly redrawing the game and updating object positions.
Please note that you'll need to replace `"emozi_all/player.png"` and `"emozi_all/enemy.png"` with the actual URLs/paths of your pictogram images to see the visuals in the game.