An N-back game is designed to test, and improve, upon a user's fluid memory. In order to score points the user needs to recall the value stated a certain number of terms back. The higher the level, the further back the correct value is. This skill is intended to be used with Amazon's Alexa Echo devices. A dual nback game will soon be available for Amazon's Alexa Show and Spot devices.
For more information on nback, please see the Wikipedia page on N-back. https://en.wikipedia.org/wiki/N-back
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