|“||Warning. No entry without authorization.||„|
The first time Samus comes here, the PA announces that she cannot enter unless permitted. This zone has all of the Metroids located in it until the Restricted Laboratory is ejected out of the station.
The only parts left of this zone after the destruction of the lab are a few rooms connecting to Sector 6 and Sector 1 (SRX). There is a way to get a Power Bomb Tank by Shinesparking into the Speed Booster Blocks in the dead end room towards the Sector 6 entrance.
- All doors in this Zone are Level 4 security doors.
- Though Samus enters the Restricted Zone through Sector 6 and exits to Sector 1, the map of the Zone itself is a part of the Main Deck map. Therefore, strictly speaking, the Restricted Zone is a part of the Main Deck and not of Sector 1 or Sector 6.
- The background of the first room of this area says Level-X on it. This is likely an alternate name for the area.