You don't get AS big of an area for your Territory but it's far easier for placements.
Review context
The author compares mobile base building with Fallout 4 and Fallout 76. This is a personal comparison, not a measured feature or performance test.

Gather resources, build a home and face unusual creatures in a Stardust-contaminated survival world.
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Image failed to load. Open the full image to retry.Once Human
US sources · iOS / Android
For survival players who enjoy gathering, base building and raising Deviations with friends in an open world.
Rated 17+ in the US, with an iOS download of about 4.00 GB, continuous internet access, purchases and a Meta Pass subscription. Check PvP/PvE server types and progress-reset rules before choosing a server.
Action survival gameplay: scavenge scrap, fight and capture Anomalies, turn scrap and Anomaly power into hundreds of custom weapons, and manage a home territory whose helpers chop wood, mine ore, and tend fields.
A bizarre apocalyptic open world where old objects awakened - buses, TVs, chairs now walk and stare - and uncovering the truth behind the fall of the world drives exploration of the Stardust-infected wasteland.
Editor’s tip
1) Secure basics first - scavenge scrap and set up a small shelter before hunting Anomalies. 2) Capture early Anomalies instead of only killing them; yesterday's enemy becomes gear and home power. 3) Bring a friend into your territory and split helper duties (wood/ore/fields) to test the co-op loop before going deep.
Gameplay evolves through era updates and limited-time events; daily playtime is unknown.
Free to download, with in-app purchases and a Continuous Meta Pass subscription.
Home automation is documented: your territory's helpers chop wood, mine ore, and tend fields on their own; the official site also describes automating your shelter. Combat automation is not described.
Co-op survival with friends is the stated framing: fight side by side for survival resources and overcome the unknown together, building a shared home territory.
No verified returning-player guide
No catch-up mechanics are described; server/season progression reset behavior is not stated in the listed sources.
US iOS 1.0.44: requires iOS 13.0 or later; download about 4.00 GB. Download size is not total installed storage. Android requirements are unknown.
Based on the sources below; not a hands-on review of the current version.
US iOS App Store, version 1.0.44, captured 2026-10-14T08:16:06Z. Package download 4.00 GB in decimal units, not installed storage. Other regions and Android requirements are not established by this source.
Source checkedUS Google Play listing (English, gl=US) for the Android package. Captured 2026-10-14 08:16:18 UTC. Static HTML snapshot: store description, badges and structured metadata as served then; the minimum Android OS version is rendered client-side and is not present in this snapshot.
Source checkedPublisher official site page (www.oncehuman.game) captured 2026-10-14 04:23:54 UTC during collection batch B02 and reused here with its original capture time and SHA-256; the page reflects the site at that moment, not necessarily later updates.
Source checkedYou don't get AS big of an area for your Territory but it's far easier for placements.
The author compares mobile base building with Fallout 4 and Fallout 76. This is a personal comparison, not a measured feature or performance test.
Excerpts from other platforms. Read the originals for full reviews.
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US store edition
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Free to download USD 0.00Open storeChecked:Store-listed minimum iOS: 13.0
US store edition
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Free to download USD 0.00Open storeChecked:International app
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Free to download JPY 0Open storeChecked:Store-listed minimum iOS: 13.0
International app
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Free to download JPY 0Open storeChecked:International app
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Free to download KRW 0Open storeChecked:Store-listed minimum iOS: 13.0
International app
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Free to download KRW 0Open storeChecked:Download prices are recorded by store country. Check the store for in-app costs, subscriptions and device eligibility.