Sure! Here's a simple implementation of Ludo game using JavaScript and HTML in a single file. The game can be played on a smartphone and uses pictograms for the tokens.
This implementation creates an HTML game board of 10x10 cells with four colored tokens representing players. Each player takes turns rolling a dice and moves their token according to the dice roll. The game is only implemented for one round per click.
You can modify this implementation to add game logic, winning conditions, or improve the user interface as per your requirements.