Sure! I've created a simple implementation of Tetris with a shrinking border using JavaScript. You can copy the following code and save it as an HTML file to run the game:
Score: 0
Border Size: 1
This code creates a simple Tetris game where the player controls the shapes using arrow keys on their smartphone. The game starts with a border size of 1, and every 10 seconds, the border size increases by 1. If the player's shape collides with the border or the existing blocks, the game is over. The player earns points by completing lines, and the border size is displayed on the screen.
You can run the game by opening the HTML file in a web browser on your smartphone. Enjoy playing Tetris with a shrinking border!