Sure! Here's a simple implementation of the Space Invaders game using JavaScript and HTML:
This is a basic implementation of the game, where you control a blue player square at the bottom of the screen. You can move the player left and right using the left and right arrow keys. Pressing the spacebar will fire a bullet from the player. The objective is to hit the green invader square moving across the screen.
Please note that this is a very simplified version of the game and does not include a full gameplay loop, scoring, or fancy graphics. Feel free to modify and enhance the game as per your requirements.