Habit is repetitive automatic behaviour. Formation of habit requires many repetitions over a certain period of time. By playing Food Game for a few weeks we have to make thousands of decisions as to choose healthy food or to refrain from the junk food. Our brains are constantly busy with very important matters, while our conscious motivations, goals, and actions are not considered significant. Brains need to understand that what we consciously do is really important. It seems it can be done only through repetitions. At one point brains will notice them and accept those actions as important and try to automate the process in order to spend less energy.
We will be able to notice that automation when we find ourselves that we finished the game while having no recollection of our actions. This is a sign of newly forming habits. We are the choices we make thousands of times every day. This game helps us to choose the desired food for us.