Sure, here's a simple game that meets your requirements:
Color Mixing Game
To play the game, simply copy the above code into a file with a ".html" extension, open it in a web browser (preferably on a smartphone for better touch experience), and start clicking on the red emoji blocks. The goal is to mix the right combination of colors to create the color purple. Each successful mix will advance you to the next level, and there are a total of 10 levels to complete. Good luck!