Here's an example of a simple game implemented as a single HTML file using JavaScript and enclosed in script tags. The game involves clicking on pictograms to score points within a given time limit. The game is optimized for smartphone operation using touchscreen inputs. Please note that the game logic and pictograms used are simple for this example:
Pictogram Game
Score: 0
Time: 60 sec
In this example, the game creates a simple interface with a score display, timer display, and a game area containing pictograms. The player's goal is to click on the pictograms to score points within a 60-second time limit. The score is updated whenever a pictogram is clicked. Once the timer reaches 0, the game ends, and an alert displays the final score.