Sure! Here's a simple web crawler game implemented as a single HTML file using JavaScript, enclosed in script tags:
Web Crawler Game
This game allows you to control a blue rectangle (the player) using the arrow keys on your smartphone. The goal is to collide with an orange rectangle (the bitcoin) on the canvas. Once the collision occurs, a message will be displayed, indicating that you found a dormant bitcoin address.
Please note that this is a simplified example and doesn't involve actual web crawling or bitcoin addresses. This game simply demonstrates the concept of player movement and collision detection within a canvas-based game.