Sure! Here is an example implementation of the "Baby Defenders" game as a single HTML file:
Simply save the above code in a `.html` file, open the file in a web browser, and you should be able to play the "Baby Defenders" game. The game is controlled by moving the mouse to move the baby and clicking to shoot bullets. The objective is to shoot the monsters before they reach the baby, and the score increases for every monster defeated. If a monster collides with the baby, it's game over and the score is displayed.