Sure, here is an implementation of a 2-player mode snake game with an AI bot using JavaScript, enclosed in script tags within a single HTML file:
This game implements a simple snake game where you control one snake and compete against an AI-controlled snake. The player snake is controlled using the arrow keys, while the AI bot follows an AI logic to navigate and compete with the player. The game uses pictograms for representing the snakes and food items. You can copy and save the above code in a single HTML file and open it in a web browser to play the game.