Your N7 increases by leveling characters and promoting them. What is the maximum N7 level that can be achieved?

3 Answers

There isn't one. It is simply the sum of the levels of all of your multiplayer characters, plus bonuses earned from "promotion".

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The current highest N7 level (On PS3) is about 42,000 (As of August 21, 2013)

I've seen a number of people on very neat N7 5000, and never anyone above this. Based on the size of the numbers in the box on the multi-player lobby, its unlikely it would go above 9999 without reformatting.

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