Sure, I can help you create a simple Minecraft-inspired game using JavaScript enclosed in script tags within a single HTML file. However, please note that implementing a complete game with complex mechanics and graphical assets suitable for smartphones may not be feasible within this limited text-based environment. I will provide a basic structure to get you started.
In this simplified game, the player (represented by a red square) starts at the left side of the screen, and there is an obstacle (represented by a green square) moving towards the player from the right side. The player needs to click or tap the screen to make the character jump and avoid the obstacle. If the player collides with the obstacle or falls below the screen, the game ends.
Please note that this is just a starting point, and you can further enhance and customize the game according to your requirements by adding additional elements, levels, and improving the gameplay mechanics.