Sure! Here's a simple dental assistant game implemented as a single HTML file using JavaScript and enclosed in script tags:
In the code above, the game features a dental assistant and a patient represented by human character pictograms. The player can control the dental assistant's movements using the arrow keys on their smartphone. The patient moves randomly every 3 seconds. The positions of the assistant and patient are updated accordingly, and the pictograms are moved on the screen using the `left` and `top` CSS properties. You can replace `emozi_all/game.png` and `emozi_apple.png` with appropriate image files for the dental assistant and patient characters.