Sure! Here's a simplified example of a game called "Killer Mascots 2v4" implemented as a single HTML file using JavaScript. Please note that this is a basic implementation to give you an idea and may require further development to be a fully functional game.
Please note that this is a simplified version of the game, and you would need to add additional functionality, such as loading game assets, rendering player and mascot graphics, implementing game logic, and refining the gameplay, to make it a fully functional and enjoyable game.