Sure, here's a basic implementation of a typing game in a single HTML file using JavaScript. The game allows you to type the displayed words within a certain time limit. It uses pictograms and is optimized for smartphone operation. However, implementing the functionality to change text font, size, color, and shadow is beyond the scope of this game.
Copy the code below and save it as a .html file:
Typing Game
Time: 60s
To use this game, simply save the code in a .html file and open it in a web browser. The game will start automatically and display a word for you to type. You can then type the word in the provided input field. When you type the correct word, the game will move on to the next word. The game will end after 60 seconds or when you have finished typing all the words. Your score will be displayed at the end.