Sure! Here's an example of an endless level-based game using JavaScript, HTML, and pictograms for smartphone operation. Please note that this code is just a basic implementation and can be further expanded and optimized according to your preferences.
In this game, you control a player represented by the "Player" pictogram. The enemies are represented by Red, Purple, and Orange pictograms. The player needs to avoid colliding with the enemies as the game progresses.
The game starts at level 1, and as you continue playing, the enemies will move faster. If the player collides with any of the enemies, a game over message will be displayed, and the game will reset to level 1.
Remember to replace the image URLs (e.g., "emozi_all/player.png", "emozi_apple.png", etc.) with your own image file URLs representing the player and enemy pictograms.
Please note that this is a simplified example, and you may need to further enhance and adjust the game logic, graphics, and user interaction according to your requirements.