Sure! Here's an example of an ABC game implemented as a single HTML file using JavaScript and pictograms. To make it smartphone-friendly, we'll provide buttons for the user to interact with the game.
In this game, each letter from the alphabet is associated with a pictogram (represented by different emojis). When the user clicks the "Start" button, the game begins and a random letter will be displayed along with its corresponding pictogram. The user can then click the "Next" button to generate a new random letter and pictogram.
Note: Please copy the above code into a file with an `.html` extension, and open it with a web browser to play the game.