Human Farm Investigation Human Farm : Investigation : Guides

Why start here

Human Farm : Investigation : is the third entry in とっくり海月’s Human Farm series, published by 072 Project on Steam (app 3953160) with a full release on August 7, 2026. You play as Iori, an undercover policewoman sent into an illegal underground human farm while juggling city errands, farm-shift routines, and a branching story with more than thirty events and five or more endings. This hub collects our longest-form guides so you can jump straight to the topic you searched for without wading through spoilers you are not ready for yet.

If you have never touched the series before, read How to Play first for the core loop, then skim Beginner Tips before your first save. Returning players from Rehabilitation or Practice Section should still read How to Play — Investigation adds city quests and a heavier investigation layer that older titles handle differently.

Featured guides at a glance

Our most linked pages cover the questions Steam reviews and community threads repeat after launch week:

• How to Play — movement, menus, day structure, and how undercover work intersects with farm shifts. Includes verified gameplay footage.
• Demo Day 1 — what the free Steam demo includes, where it stops, and how to use Day 1 as a tutorial before buying the full game.
• How to Unlock Scenes — all thirty-four story events, flag habits, and why the gallery unlocker is not a substitute for playing routes.
• How to Get Endings — five-plus finales, decision windows, and common dead-end saves.
• City Quests — side errands outside the farm that feed investigation progress and character trust.
• Beginner Tips — quality-of-life settings, save rhythm, and mistakes that waste an in-game day.
• Common Issues — mouse doors, run mode, demo saves, patch RP26071196 verify integrity, unlocker vs endings.

Each guide cross-links siblings in this category and points to Controls, Walkthrough, Systems, and Tools when a deeper reference is more appropriate than repeating full tables here.

Recommended reading order

There is no single mandatory sequence because Investigation supports multiple play styles — story-first, completionist gallery hunting, or ending-focused routing. A balanced first run usually looks like this:

1. Enable run mode under Settings and Run Mode and confirm Keyboard Controls — mouse clicks do not open doors on the Steam build.
2. Complete or skip the Demo Day 1 to learn infiltration basics without committing to a purchase.
3. Follow How to Play through your first two in-game days, picking up City Quests when Maria or Tsubaki flag new leads.
4. When you miss a scene, switch to How to Unlock Scenes and the Scene Checklist tool rather than guessing flag combinations.
5. Before a finale push, read How to Get Endings alongside Ending Routes and the Ending Tracker.

Players chasing the true ending should add True Ending Checklist after the story overview, not before — spoilers are minimized but not zero.

How these guides relate to other wiki sections

Guides explain what to do and when it matters; other hubs hold reference detail:

Need	Go to
Day-by-day story beats	Story Overview
Character motives and routes	Characters hub
Investigation meters, items, cheats	Systems hub
Room-by-room navigation	Map hub
Purchase value and series context	Review hub
Printable checklists	Tools hub

We keep mature themes framed around systems and consent within the fiction — every cast member involved in detailed scenes is twenty or older per official store listings, and guides focus on mechanics rather than gratuitous description.

Patch, platform, and language notes

The Steam client ships with English, Japanese, Simplified Chinese, and Traditional Chinese UI. An official restore patch from 072 Project exists for players who want content outside the default Steam cut; see Official Patch and the Patch Install Helper before you assume a missing scene is a bug.

All guides assume the full release unless a section is clearly labeled demo-only. Demo progress does not carry over — treat Day 1 as a standalone tutorial.

Keep this hub bookmarked

We update guides after major patches and community-verified flag discoveries. If a link 404s after an update, regenerate from source JSON via the project scripts — hub paths always end with a trailing slash in markdown links, matching site routing rules.