Sure! Here's an example of a simplified game inspired by Fortnite implemented as a single HTML file using JavaScript:
This game creates a canvas where you control a blue player using touch gestures on a smartphone. The objective is to overlap the red enemy (represented by a circle) to increase your score. As you overlap the enemy, the score increases and a new enemy is randomly positioned on the canvas. The score is displayed on the top left corner.
Please note that this is a very simplified version of a game and does not include any advanced features or mechanics found in Fortnite.