Sure! Here's a simple game implementation using HTML and JavaScript code that you can play as a finished game. The game is called "Survive Rainbow Monsters" and is designed for smartphone operation.
To play the game, open the HTML file in a web browser (preferably on a smartphone). The game involves surviving and avoiding rainbow monsters that move randomly on the screen. Move the player (represented as a yellow square) by dragging your finger on the screen or by clicking (for testing purposes) to avoid colliding with the monsters. Your score will increase as long as you survive without colliding. If you collide with a monster, the game will be over, and your score will be displayed. You can then restart the game by closing the alert box. Enjoy playing "Survive Rainbow Monsters"!