Sure, here's an example implementation of a game using JavaScript in a single HTML file. In this game, you need to find 9 hidden zebras within a grid of pictograms. Each zebra found earns you 10 points, and you have a total of 90 points to reach.
Find the 9 Zebras!
Score: 0
To play the game, open the HTML file in a web browser (preferably on a smartphone for a better experience). The grid will contain various pictograms, and you need to click on the pictograms that represent zebras ('
🦓'). Each correct click will earn you 10 points, and the score will be displayed on the top. Once you find all 9 zebras, an alert will congratulate you on completing the game.