When we are introducing a new game (it will have the label "new"), we start collecting some more information about it at the beginning, before allowing your scores in that game to influence the rest of your statistics. You will find information about that on the home screen of that game: under "Benefits" it will say "New Game" and alert you to the fact that the game scores will not yet affect your Peak Brain Score yet. Your scores will not get lost though. We store them and then evaluate them once we have enough data.
Please also note that our Advanced Modules will not show in your statistics either as these are separate modules you can add later on.