This is a life simulation. 200 food particles are given every single day, which is 5 seconds. A green creature must eat 5 food particles to survive for a day and 10 to reproduce. Yellows are faster than greens and require 5+ more food to survive and reproduce. If you look at the far left, you will see a graph of the population, each starting with 3.
The music comes from Minecraft. OLD DESCRIPTION: 100 food particles are given every single day, which is 5 seconds. A creature must eat 5 food particles to survive for a day and 10 to reproduce. Yellows are faster than greens.