Sure! Here's an example of a game implemented as a single HTML file using JavaScript. It assumes smartphone operation and uses pictograms. The game is about helping Sasuke Uchiha with his stomach ache. Just copy the code below and save it as an HTML file to play the game.
This game will display messages and options to choose from. When an option is selected, it will simulate the corresponding action (giving medicine, preparing tea, or going to the hospital) with a delay for processing. If the selected action cures Sasuke's stomach ache, the game will be over and display a congratulatory message. If the action doesn't cure his stomach ache, the game will continue with new options to choose from.