Sure! Here's an example of a simple cat game implemented as a single HTML file with JavaScript:
Cat Game
Tap the cat to earn points!
Points: 0
😺
In this game, the player earns points by tapping on the cat emoji ("
😺"). Each time the cat is tapped, the score increases by 10, and a message saying "Meow!" is displayed. The current score is shown at the top. The game can be reset by reloading the page, which sets the score back to 0. The game is designed to be played on a smartphone, as it uses a cursor pointer and the cat can be easily tapped.