Sure, here's 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 a fun experience.
To use this code, you need to replace `'emozi_himawari.png'` with the actual URL of your smiley image. This code creates smiley icons randomly on the screen, and when you click on a smiley, your score will increase based on the current multiplier. Each time you click a smiley, a new one will appear on the screen. The game keeps track of your score and displays it on the screen. Have fun playing the multiplying smiley game!