Sure! Here's a simple platformer game implemented as a single HTML file with JavaScript:
This implementation creates a simple platformer game where the player (represented by a red rectangle) can move left and right using the left and right arrow keys. The objective is to navigate the player across the gray platform.
The game loop continuously refreshes the canvas, taking care of player movement and drawing the player and platform on the screen. The player's position and platform dimensions can be adjusted to suit the game's requirements.
Please note that this implementation does not incorporate randomization, Android compatibility or LG phone compatibility. It also does not utilize OpenGL shaders. It's a simplified implementation of a platformer game using JavaScript and HTML canvas suitable for a smartphone operation in a single HTML file.