Your Peak Brain Score (PBS) is an overall relative measure of your performance levels in Peak, and is a score out of 1,000. It is made up of the 6 skill indexes (Memory, Problem Solving, Mental Agility, Focus, Emotion and Language), which are themselves determined by comparing your performance to other Peak users. However, please note that the PBS is the average of all games you played, the PBS is not an average of all the Category PBS calculated together as there are some games that count towards multiple skill indexes.