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(Restricted Area) Retroflux Zone

Last updated 2026-08-27

[Retroflux Zone]
The underground water reclamation and treatment area beneath Booastrum. It covers a vast area, but the interior is cramped. Humans have difficulty moving around freely here, so the Retroflux Zone has become a secret gathering place for certain Bangboo.

[Restricted Area] Retroflux Zone, formerly named [Restricted Area] Backflow Zone, is an Investigation Zone in (Restricted Area) Booastrum. It becomes accessible during The Long Goodbye and is fully explorable after completing the commission.

Overview

The Retroflux Zone is a water treatment facility located under Gear Street. It serves as the primary base of operations for the En-Nah Gang, and while it is primarily accessed through Gear Street, it can also be entered via the Phone Booth at the Spotlight Theater, which teleports the player directly to the En-Nah Gang base. This area is also Remielle's residence.

Features

Combat

Exploration

Other

  • Map Misc Retroflux Zone Entrance
  • Map Misc Retroflux Zone En-Nah Gang

Maps

  • Retroflux Zone Lower Level
  • Retroflux Zone Upper Level

Interactions

Interactables

  • Idle Arcade Machine
  • Remielle's Bed
  • Remielle's Letter
  • Tactics Board
  • Three Sunbringer Wanted Posters

Trivia

  • This area was initially named "[Restricted Area] Backflow Zone" when Version 3.1 released. However, all instances of "Backflow Zone" were later changed to "Retroflux Zone."‍[update date unknown]
    • This change only occurred in the English localization of the game, while all other languages retained their translations of the original name. Therefore, it can be assumed that "Backflow" was an erroneously literal translation of "Retroflux" and was changed to maintain consistency with all other instances of the place being referred to as the "Retroflux Zone" at release.[1]

Other Languages

LanguageOfficial Name
English[Restricted Area] Retroflux Zone
Chinese
(Simplified)
[管制区]回流区
Chinese
(Traditional)
[管制區]回流區
Japanese[管制区]還流区
Korean[관제 구역] 순환 구역
[Gwanje Guyeok] Sunhwan Guyeok
SpanishÁrea restringida: área de reflujo
French[Zone restreinte] Zone de refluement
Russian[Запретная область] Зона рециркуляции
[Zapretnaya oblast'] Zona retsirkulyatsii
Thai[เขตควบคุม] เขตกระแสย้อนกลับ
Vietnamese[Khu Quản Chế] Khu Hồi Lưu
German[Sperrgebiet] Rückstrom-Zone
Indonesian[Area Terlarang] Zona Retrofluks
PortugueseZona Restrita: Setor de Retrofluxo

Change History

Version 3.1

  • [Restricted Area] Backflow Zone was released.

Unknown Date

  • The name was changed to [Restricted Area] Retroflux Zone.

References

  1. Example: Phaethon's Story, The Long Goodbye, Episode 3: En-Nah Gang of the Retroflux Zone

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