Sure! Here's a simple example of a game where animals constantly evolve into an infinite amount of forms due to their ever-changing environment. I have used pictograms to represent the animals.
To play the game:
1. Save the code as a single HTML file, for example, "evolution_game.html"
2. Open the HTML file in a web browser, preferably on a smartphone.
3. You will see a canvas with animals represented by pictograms moving around.
4. The animals will constantly evolve and mutate their pictograms over time.
5. Enjoy observing the infinite forms animals take in response to their ever-changing environment!
Note: This is a very basic implementation of the concept you described. You can enhance the game with more features and complexity as desired.