Sure! Here's an example of a simple board game implemented as a single HTML file using JavaScript:
This code creates a simple tic-tac-toe game that can be played on a smartphone. It uses pictograms in the form of X and O symbols for the players. Players take turns by tapping on the cells of the board, and the game continues until one player wins or it's a tie. Once a game ends, an alert is shown, and players can reset the game to play again.