Sure, here's an example of a spider simulation game implemented as a single HTML file using JavaScript and enclosed in script tags. The game simulates a spider crawling around the screen and the player needs to catch the spider by tapping on it. The game is designed for smartphone operation and uses pictograms for visuals.
In this game, the spider is represented by a pictogram image (spider.png) and is initially positioned randomly within the game container. Every time the spider is clicked, the player's score is incremented and the spider's position is updated randomly again. The game continues indefinitely, allowing the player to catch as many spiders as they can by tapping on them.