N7 Missions are designated with an N7 prefix in the mission title. N7 missions are much shorter than side missions and are not required but they do have quite a few collectibles and mission critical items that are required for Side Missions. These missions are based on the maps used for multiplayer so it also serves as a way to familiarize yourself with the maps.

There is an achievement/trophy that may be gained by finishing all of the N7 Missions.