Sure! Here's an example of a simple game where you need to afk for 30 seconds to win, and when you win, an alarm sounds and confetti is displayed on the screen for 5 seconds. It will work as a single HTML file that you can run on a smartphone.
In this example, you need to wait for 30 seconds without any interaction, and once the time is up, an alarm sound will play and confetti will be displayed on the screen for 5 seconds. You can customize the alarm sound and confetti image by replacing the corresponding files (`alarm.mp3` and `emozi_all/time.png`) in the same directory as the HTML file.
Please note that since this is a text-based response, you won't be able to hear the alarm sound or see the confetti effect. You'll need to implement the necessary audio and image files and run the code in a suitable environment to experience the full game.