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Released · Fan Wiki

Sister Other Paranoia Wiki

Walkthrough, endings, Steam reviews, and content warnings for Sister Other Paranoia.

Unofficial Sister Other Paranoia wiki: Steam launch facts, endings walkthrough, story context, and classic VN how-to guides.

Buy on Steam Open the walkthrough
Aug 14
Steam release (2026)
$7.99
Intro sale (was $9.99)
81%
Steam Very Positive
4
Confirmed endings
Story overview How to play Trailer breakdown Content warnings
Explore the wiki

Six hubs covering launch facts, story context, gameplay, walkthroughs, reviews, and player tools.

Release

Sister Other Paranoia Release Hub

Sister Other Paranoia release hub: Steam date, launch times, intro sale price, platforms, languages, system requirements, and wishlist tips.

Read page Story

Sister Other Paranoia Story Hub

Sister Other Paranoia story hub: spoiler-light premise, characters, warnings, staff, and Aiobahn +81 soundtrack notes.

Read page Gameplay

Gameplay Hub

How Sister Other Paranoia plays: classic VN reading, five motif routes, mind-reading pressure, and four-ending choice framing.

Read page Guides

Guides Hub

Sister Other Paranoia guides: getting started, endings walkthrough, trailer, Discord demo, streaming, and how to buy.

Read page Review

Review Hub

Sister Other Paranoia review hub: Steam Very Positive reception, critic notes, preview verdict, and buyer FAQ after launch.

Read page Tools

Tools Hub

Player tools for Sister Other Paranoia, starting with a content warning checker mapped to official mature-theme disclosures before you buy.

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Release

Release & store

Steam date, intro sale, system requirements, and languages for Sister Other Paranoia.

Sister Other Paranoia release date Steam unlock timing, timezone notes, and what “August 14 vs 15” meant. Regional launch times PT, ET, UTC, JST, and other clocks for the August 2026 unlock. Price and intro sale $9.99 list, 20% intro offer to $7.99 through August 28, plus DLC. Steam languages English, Japanese, and Simplified Chinese on Steam—what that means for play. Platforms Windows and macOS on Steam, plus Deck uncertainty. How to wishlist Still useful for sale alerts after you own the game—or before you buy.
Story

Story & themes

Named cast, mature content warnings, soundtrack DLC, and the HazeDenki staff.

Story overview Spoiler-light premise, tone, and denpa atmosphere. Characters Hasuya, Sahana, Igusa, Botan, Hiyakawa, and the wider cast. Content warnings Mature themes disclosed by the developers. Soundtrack Aiobahn +81, 14 in-game tracks, and the Steam OST DLC. Staff and credits nyalra, Ohisashiburi, Aiobahn +81, and the HazeDenki team.
Gameplay

Gameplay & systems

Classic VN loop, five motif routes, mind-reading choices, and ending structure.

How to play Classic full-screen visual novel loop explained. Routes and motifs Prologue, five motifs, four chapters each, and lock rules. Controls Advance text, hide UI, and read without friction. Mind-reading mechanic What the power does and why it matters narratively. Choices guide Which decisions actually change endings—and which do not.
Guides

Featured guides

First play, endings walkthrough, trailer, demo notes, and how to buy the Steam sale.

Getting started First-session checklist now that the game is out. Endings walkthrough Bad, Monkey, Normal, and True ending steps with spoiler labels. Trailer breakdown Official trailer context with embedded video. Demo guide Discord demo access and how it differs from the full game. Discord community Official HazeDenki server, demo drops, and bug reports. Streaming guide Steam creator policy: full playthroughs, spoilers, monetization. Dev diaries Public HazeDenki and Steam posts about the VN’s making. How to buy Steam purchase checklist and the August intro sale.
Review

Review & reception

Steam Very Positive scores, critic notes, and the questions players still ask.

Steam reception Very Positive user score plus NookGaming and CGC critic notes. Preview and verdict Tone, length, and whether the marketed pitch landed. Player FAQ Common buying and content questions answered.
Tools

Player tools

Check whether Sister Other Paranoia’s mature themes fit your comfort level.

Content warning checker Interactive comfort check before you buy or continue.
Featured guides
Gameplay

How to Play Sister Other Paranoia

Learn the classic visual novel loop for Sister Other Paranoia: read, click, hide text, and handle heavy themes responsibly.

Read page Guides

Getting Started with Sister Other Paranoia

Getting started with Sister Other Paranoia: warnings, first-session steps, motif board, and what to read after purchase.

Read page Release

Sister Other Paranoia Release Date

Sister Other Paranoia released on Steam Aug 14, 2026, at 8PM PT / 11PM ET—the same moment as Aug 15 3AM UTC and noon JST.

Read page Review

Sister Other Paranoia Reception

Sister Other Paranoia Steam reception: Very Positive user score, intro sale, plus NookGaming and CrazyGameCommunity critic notes.

Read page Story

Sister Other Paranoia Story Overview

Spoiler-light Sister Other Paranoia overview: mind-reading writer, sister codependency, dark VN tone, without ending spoilers.

Read page Tools

Content Warning Checker

Interactive content warning checker for Sister Other Paranoia—toggle sensitive themes against official mature-content disclosures.

Read page
Quick start

New to Sister Other Paranoia? Follow these steps after purchase.

  1. 1

    Read the content warnings

    Sister Other Paranoia covers psychological distress, injury imagery, and suggestive themes. Start with the content warnings page or the content warning checker before you buy.

  2. 2

    Confirm store and sale details

    The game is out on Steam. Check the release date, price (intro 20% off through August 28), languages, and platforms before you install.

  3. 3

    Learn the motif-and-chapter loop

    Read how to play, routes, and controls so the five motifs, four-chapter scenarios, and mind-reading prompts feel intentional.

  4. 4

    Play one honest run, then use the walkthrough

    Finish a first pass before opening the endings walkthrough. Pair it with choices if you want save hygiene without a spoiled first night.

  5. 5

    Check reception and the trailer

    Skim Steam reception and the preview for critic notes, then watch the official video on the trailer breakdown.

FAQ

Wiki FAQ

Quick answers to the most common questions.

What is Sister Other Paranoia?

A dark psychological visual novel from HazeDenki (scenario by nyalra) and publisher Serenity Forge. It follows Hasuya, a hypersensitive light novel writer who can read minds, and his sister Sahana. See the story overview.

When did Sister Other Paranoia release?

Steam unlocked the game on August 14, 2026 at 8:00 PM PT—the same moment as August 15, 3:00 AM UTC and noon JST. See release date and regional launch times.

Is this wiki official?

No. This is an unofficial fan resource. Confirm price, mature content, and patches through Steam, HazeDenki, and Serenity Forge.

Which languages are supported?

This wiki is available in: English, 日本語. Sister Other Paranoia itself lists English, Japanese, and Simplified Chinese on Steam; this fan wiki focuses on English and Japanese.

Does the game have codes or Roblox scripts?

No. Sister Other Paranoia is a Steam visual novel, not a Roblox experience. This wiki focuses on launch facts, story context, walkthroughs, and comfort tools instead.

Where should sensitive players start?

Begin with content warnings and the content warning checker, then skim mind reading so the core mechanic is not a surprise.