Build Your Base. Hunt the Monsters. Survive Once Human.

Explore a post-apocalyptic open world corrupted by Stardust. Scavenge resources, craft 100+ weapons, build and defend your territory, and fight terrifying aberrations — solo or with a squad. Free on Steam. Windows PC.

Don't Just Play — Survive Free
No purchase No credit card 90 GB required Windows 10/11 only

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How to Start

Your Survival
Starts Here.

Three steps. No separate launcher required.

Step 01

1

Click "Download Free"

Steam opens instantly and queues the download. No Steam? It takes 2 minutes to install — then come back.

Step 02

2

Download & Install

Plan for up to 90 GB free space. SSD strongly recommended. You can pause and resume anytime.

Step 03

✓

Launch → Survive

No paywall. No tutorial gate. Create your character and the open world opens immediately.

System Requirements

Operating System
Windows 10/11
No Mac. No mobile.
Disk Space
Up to 90 GB
SSD recommended
Platform
Steam — Free
No launcher needed
Connection
Always Online
Stable internet required
⚡

If your install fails silently: check that you have 90 GB free — not 55 GB. Low disk space is the #1 silent failure cause.

Claim Your Place — Download Free
Once Human — open world

Open World

Explore Without Limits.
A Fallen World Waiting to Be Claimed.

Ride, glide, and traverse a massive post-apocalyptic open world corrupted by Stardust. Every zone hides aberrants, resources, and untold secrets.

Once Human — aberrant combat

Aberrant Combat

Hunt Them Down.
Before They Hunt You.

Face terrifying mutated aberrants lurking at every turn. S3 — Aberrant Progeny is live. Track them, fight them, and absorb their power to survive.

Once Human — squad combat

Squad Combat

Join Forces.
Battle Enemies Side by Side.

Form a squad, equip 100+ modded weapons, and fight together in explosive tactical combat. PvE and PvP servers — choose your battlefield.

Once Human — base building

Base Building

Unleash Your Creativity.
Build Your Own World.

Design, construct, and claim your Territory Core. Build unique bases that every player on the server can see — and envy.

Once Human — hive & co-op

Hive & Co-op

Stick With Your Hive.
Stronger Together.

Share your territory, grow your community, and build a world worth defending. Form a hive and set your own rules in the Stardust world.

Why Once Human

Explore. Craft.
Conquer.

Unleash your survival skills and build your world of adventure.

🧟
Survival That Punishes Complacency

Manage hunger, water, and sanity under Stardust contamination. The world decays — and so do you — if you stop moving.

Open World
🔫
100+ Gun Blueprints to Hunt Down

Collect, craft, and mod over 100 gun blueprints. Loot loop built around gear progression — not level grinding.

Weapons & Loot
🏗️
Base Building With a Real System

Build and hold your Territory Core. Design, expand, and relocate your base. Other players can see it. Make it count.

Territory
👥
Survive Together or Alone

Full solo progression or co-op squad play. PvE and PvP server types available. Choose at character creation.

Co-op & PvP
Before you play — quick check
  • Windows 10 or 11 required — not Mac, not mobile
  • Up to 90 GB free disk space — SSD strongly recommended
  • Internet connection required — always-online game
Real Numbers

The Community
Is Already There.

Every number sourced from a named public source — no inflated claims.

231k+
All-Time Peak Concurrent Players
SteamDB
166k+
Steam Reviews (Total)
Steam Store
792k+
Official Discord Members
Discord Server
★★★★★

"The base building system is genuinely deep. One of the best survival games in years — and it's completely free."

Steam Community Forum
★★★★☆

"The Stardust contamination mechanic changes how you think about exploring. Not just another survival clone."

Steam Review
★★★★★

"Played with two friends on day one — had a base started within the hour. Great co-op from the very first session."

Steam Community Forum
Quick Answers

Still Have
Questions?

Yes — Steam lists Once Human as Free to Play. No purchase, no subscription. Optional cosmetic purchases exist but nothing is required to progress.
Steam's system requirements page lists 90 GB available space — the accurate figure covering patches and swap files. Installing below 90 GB risks silent failure.
Both. Full solo progression is supported. Choose your server type at character creation.
PvE and PvP server modes both exist. On PvE servers, player raiding is restricted. You pick at character creation.
This page is for the Steam PC version on Windows — where the full feature set runs at maximum depth and fidelity.
Check: (1) 90 GB of free disk space. (2) SSD if possible. (3) GPU drivers up to date. The official Discord has active support channels.
Most players are engaged within the first session. With a friend: 30–60 minutes before you have a base started and real fights underway.
Ready to Survive?

Join the Fight.
It's Completely Free.

Download Once Human today and unlock exclusive in-game rewards. Windows PC. Up to 90 GB. No purchase required.

Download Once Human — Free Steam Store Page →

Windows 10/11 only · Up to 90 GB · No purchase required