Here's an example of a simple 2D Minecraft-like game implemented as a single HTML file using JavaScript and enclosed in script tags. Please note that this is a simplified version just for illustration purposes.
In this example, a basic game canvas is created using HTML5 `<canvas>` and then accessed and manipulated in JavaScript through the `ctx` object. The player's position is defined as variables `playerX` and `playerY`, and the player is drawn as a blue rectangle on the canvas. The game loop continuously clears the canvas, updates the player's position (the example moves it to the right), and redraws the player. The loop is repeated using the `requestAnimationFrame` function.
Please note that this is just a simple starting point for a 2D Minecraft-like game, and you would need to add more functionality, such as terrain generation, item management, and interactable objects, to create a complete game.