Here's a simple implementation of the game "Eat Sand" using JavaScript and HTML:
This code creates a game where the player controls a red cube (`player`) to eat yellow sand (`sand`). The player can use the left and right arrow keys to move the cube horizontally on a desert island. The objective is to eat as much sand as possible.
Score starts at 0 and decreases by 1 for each sand that falls off the screen. Score increases by 1 for each sand that is eaten. The game ends when the score becomes negative and an alert is shown.
Note: The code may need further refinement and improvements based on your specific requirements and game design.