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Steam Demo · Fan Wiki

Alien Invasyndrome Wiki

Stealth, nesting, skill trees, and Atlas deck routes for Alien Invasyndrome.

Unofficial Demo wiki for Alien Invasyndrome: stealth, nesting, Security Room routes, skill builds, Atlas maps, and tools.

Adult Only (18+). All characters are adults.

Wishlist on Steam Start with How to Play
1.0
Demo hotfix (May 2026)
EN / JP
Official interface languages
Atlas
Ship decks to infiltrate
18+
Adult-only content
Explore the wiki

Hubs built around what players actually search for before and after each Demo session.

Guides Demo Guides Hub Alien Invasyndrome Demo guides: how to play, stealth, nesting, capture, cover, Security Room, boss tips, INT vs STR, softlock fixes. View all Guides Walkthrough Demo Walkthrough Hub Alien Invasyndrome Demo walkthrough hub: Kitchen, Lab & Cafeteria, Security A/B, Boss Route clear order, plus Middle Deck Loop. View all Walkthrough Controls Demo Controls Hub Alien Invasyndrome Demo controls hub: keyboard binds, stealth actions, save and progress, Locale Emulator, system requirements. View all Controls Map Atlas Map Hub Atlas map hub for Alien Invasyndrome Demo: decks, key rooms, Middle Deck Loop drills, vents, Security routes, and stealth links. View all Map Skills Demo Skills Hub Skills hub for Alien Invasyndrome Demo: skill tree menu, INT/STR growth, evolution paths, early larva builds, planner links. View all Skills Characters Demo Characters Hub Alien Invasyndrome Characters Hub: Atlas crew patrol roles, Clinic doctor encounters, and mechanical NPC notes for the Demo. View all Characters Review Demo Review Hub Alien Invasyndrome Review Hub: Demo impressions, pros and cons, soundtrack notes, and wishlist advice for Steam. View all Review Updates Demo Updates Hub Alien Invasyndrome Updates Hub: Demo 1.0 hotfix notes, version history, Dev Progress, Steam wishlist status, and Demo access. View all Updates Tools Demo Tools Hub Alien Invasyndrome Demo tools hub: skill planner, nest checklist, and detection timer for Atlas stealth practice sessions. View all Tools
Alien Invasyndrome stealth gameplay
Alien Invasyndrome security room
Alien Invasyndrome skill progress
Alien Invasyndrome capsule art
Featured guides
Guides

How to Play Alien Invasyndrome Demo

Learn Alien Invasyndrome Demo basics: larva movement, softlock hiding, nesting goals, INT/STR spends, and Atlas room flow.

Read guide Skills

Skill Tree INT STR Alien Invasyndrome

Alien Invasyndrome Demo skill tree guide: menu access, INT/STR planning, WIP quirks, nest gates, and unlock priority tips.

Read guide Walkthrough

Alien Invasyndrome Demo Walkthrough

Full Alien Invasyndrome Demo walkthrough covering intro, nesting, skill tree, Kitchen, Security A/B, boss, and Demo end.

Read guide Guides

How to Nest Guide

Alien Invasyndrome nesting guide: when to start a nest, how stealth and INT/STR affect success, and safe room picks on Atlas.

Read guide Guides

Softlock Fixes Guide

Fix Alien Invasyndrome softlocks: desk hide traps, detection penalty waits, input recovery, Locale Emulator UI issues, and safe retries.

Read guide
Quick start on Atlas

Five steps that stop most early softlocks and wasted detection timers.

  1. 1

    Confirm Demo access & PC specs

    Wishlist on Steam, then read Demo Access and System Requirements before installing.

  2. 2

    Learn the stealth loop

    Read How to Play, Stealth and Detection, and Vents & Cover so detection penalties do not eat your session.

  3. 3

    Nest and capture with a plan

    Follow How to Nest and How to Capture, and keep the Nest Checklist open.

  4. 4

    Clear Clinic, Lab & Security routes

    Study Clinic Doctor Route, Lab & Cafeteria Route, INT vs STR, Security Room, and the Demo Walkthrough.

  5. 5

    Track versions and finish the boss

    Check Changelog / Version History, then use Boss Route, How to Beat the Boss, and Softlock Fixes.

Ship & progression hubs

Jump into Atlas layouts, skill planning, and character notes without hunting random tabs.

Map

Map hub

Atlas map hub for Alien Invasyndrome Demo: decks, key rooms, Middle Deck Loop drills, vents, Security routes, and stealth links.

View all Map Skills

Skills hub

Skills hub for Alien Invasyndrome Demo: skill tree menu, INT/STR growth, evolution paths, early larva builds, planner links.

View all Skills Characters

Characters hub

Alien Invasyndrome Characters Hub: Atlas crew patrol roles, Clinic doctor encounters, and mechanical NPC notes for the Demo.

View all Characters
Player tools

Lightweight helpers for builds, nest checklists, and detection cooldown planning.

Tools

Tools hub

Alien Invasyndrome Demo tools hub: skill planner, nest checklist, and detection timer for Atlas stealth practice sessions.

View all Tools Tools

Skill Planner Alien Invasyndrome

Interactive skill planner for Alien Invasyndrome Demo: balance Stealth, Nesting, INT, and STR before your Security push.

Read guide Tools

Nest Checklist Alien Invasyndrome

Interactive nest checklist for Alien Invasyndrome Demo: nest site, softlock, Kitchen/Clinic scouts, spends, and Security prep.

Read guide Tools

Detection Timer Alien Invasyndrome

Detection timer for Alien Invasyndrome Demo: practice the ~1 minute hide window with a default 60-second mm:ss countdown.

Read guide
Walkthrough & review

Route the Demo boss, check progress milestones, and read a grounded Demo review.

Walkthrough

Walkthrough hub

Alien Invasyndrome Demo walkthrough hub: Kitchen, Lab & Cafeteria, Security A/B, Boss Route clear order, plus Middle Deck Loop.

View all Walkthrough Review

Review hub

Alien Invasyndrome Review Hub: Demo impressions, pros and cons, soundtrack notes, and wishlist advice for Steam.

View all Review
Controls & Updates

Controls · Updates

Controls

Controls hub

Alien Invasyndrome Demo controls hub: keyboard binds, stealth actions, save and progress, Locale Emulator, system requirements.

View all Controls Updates

Updates hub

Alien Invasyndrome Updates Hub: Demo 1.0 hotfix notes, version history, Dev Progress, Steam wishlist status, and Demo access.

View all Updates
Frequently Asked Questions

Wiki FAQ

Quick answers to common Alien Invasyndrome questions.

What is Alien Invasyndrome?

An adult stealth-action Demo from Mozu Field where you play a weak alien larva aboard Atlas, capturing crew, building a nest, and evolving skills. Wishlist it on Steam.

What is the latest Demo version?

Community trackers list Demo 1.0 hotfix (May 2026). See Changelog and Version History for the 0.65→1.0 timeline.

Is this wiki official?

No. This is an unofficial fan resource. Confirm releases on Steam or the developer Patreon.

Which languages are supported?

This wiki supports: English, 日本語. Configure locales in site.meta.json and run npm run generate:i18n.

Where should absolute beginners start?

Start with How to Play, then Controls, then the Demo Walkthrough.

Does the Demo have a save system?

Some builds were criticized for unreliable saves. Treat each run carefully and read Save & Progress plus Updates for version notes.

Is the game available in Japanese?

Yes. Steam lists English and Japanese. Older builds may need Locale Emulator.