Gamerscore
From Xboxic
Your Gamerscore shows your accumulated Gamer Points in your Gamercard. As you gain Achievements you get awarded Gamer Points which are then added up to your total Gamerscore.
The Gamerscore is merely a way of bragging to your friends how many games you have played, and how intensively you tried to complete them. There is no monetary value associated unlike Microsoft Points.
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