Sure, here's an example of a simple game implementation of Super Smash Bros using JavaScript in a single HTML file:
In this implementation, the game canvas is represented as a `<canvas>` element where the game elements, such as the player, opponent, and projectile, are displayed using pictograms like emojis. The game logic is written in JavaScript within the `
` tags. Players can control the player's movement using mouse input and shoot projectiles by clicking on the canvas. The opponent moves towards the player, and if a projectile collides with the opponent, it disappears.
Note that this is a very basic implementation and only serves as a starting point for a simplified version of Super Smash Bros. You can enhance and modify the game as per your requirements and game design.