Sure! Here is a simple game implemented as a single HTML file using JavaScript. The game is designed for smartphone operation and involves two enemies: "Playtime" and "Princessble".
Jump Rope Game
Please note that in the code above, the enemy pictogram images (`emozi_all/enemy.png` and `emozi_chicken.png`) need to be replaced with actual image files you want to use for the enemies. Also, you can customize the gameplay mechanics, visuals, and level design further based on your requirements.