Sure! Here's an example of a simple game using JavaScript where you can control a stickman emoji using arrow keys on a smartphone. The stickman should avoid getting hit by red laser emojis that move around the screen. The game gets progressively harder as you complete 10 rounds, with the lasers getting bigger and moving faster.
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You can copy and paste the above code into a single HTML file and open it using a web browser on your smartphone to play the game. Use the arrow keys to move the stickman (represented by the red stickman emoji) and try to avoid getting hit by the red laser emojis (represented by the heart emoji). The game will get progressively harder after each round of 10, with the lasers getting bigger and moving faster. Good luck and have fun!