Sure! Here's an example of a simplified Pac-Man game with a boomerang that can kill ghosts, using JavaScript and HTML:
In this example, the game board is represented as a grid of cells. The Pac-Man character is represented by the yellow cell, the ghost by the red cell, and the boomerang by the green cell. The player controls Pac-Man using arrow keys to move and the objective is to either reach the ghost to win or use the boomerang to kill the ghost.
Note that this implementation is a basic version of Pac-Man and there are many additional features and improvements that can be made.