Below is the code for a simplified version of a game similar to Spore, but with AI and 2D elements. The game is implemented as a single HTML file and includes JavaScript code enclosed within script tags. Please note that this is a basic implementation and can be expanded upon and improved further.
To play the game, simply save the above code as an HTML file, open it in a web browser (preferably on a smartphone for better experience), and interact with the organisms represented by blue squares on the canvas. The organisms will evolve over time, trying to eat the green food items while avoiding obstacles (not yet implemented in the provided code). The score is displayed at the top left corner of the canvas.