I didn’t do much coding, and the game still needs a lot of work, but I have reached a great milestone! The game naturally selects traits! I added some statistics and a new memory trait because the creatures could just set off on a journey and remember the exact position down to the decimal places of the last food and water it saw, so I fixed that and added a timer which wipes the memory of the food/water position once it times out. The default traits are: 75 speed, 150 sight, 1 metabolism, and 7 memory. The average traits after running the simulation for some time: 65 speed, 125 sight, similar metabolism, and 10 memory. This result is pretty consistent with the exact plant and water setup in the image, but if I change it to a sparser environment, I saw speed go up by 10, sight go up by 5, metabolism stay the same, and surprisingly, despite being a trait with no negatives implemented yet, memory go down by 0.25. I guess memory doesn’t matter if you are fast enough and see well.