Sure! Here's a playable sample game implemented as a single HTML file using JavaScript. The game is about mixing colors using a colored hand.
✋
In this game, you have a hand represented by a hand emoji (HTML entity `✋`). The hand starts as blue. You can click on it to mix the color with the previously selected color. After each mix, a different selection of colors will be presented to you.
To play the game, simply open the HTML file in a web browser, and click on the hand to mix the colors. The color selection will appear after each mix, where you can select the next color to mix.