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Once Human Beginner's Guide: Deviations, Scenarios and Surviving Your First Season

Once Human mixes survival crafting, monster collecting and seasonal wipes into something genuinely strange. Here is how to start strong in 2026 without losing your progress or your sanity.

Once Human official key art (Steam library hero banner)
Once Human · Steam · Starry Studio

After two full seasonal cycles in Once Human, I have made every mistake this game allows: built a base in a dead zone, ignored my Deviations, and panicked at my first server wipe. You do not have to. Starry Studio's free-to-play supernatural survival game is deep into its self-declared Year of the Monsters, with the island-themed Isles of the Abyss scenario in testing, new Visionary Wheel seasons rolling out, and console releases on the way. It is a great time to start, but the game explains almost none of its own structure. This guide fills that gap.

Understand Scenarios Before You Care About Anything Else

Once Human is not a persistent forever-world. You join a scenario, a themed server season that runs through numbered phases over several weeks, then concludes. When it ends, the world resets. That sounds brutal, but the game is built around it: your character, cosmetics, blueprints and a stash of items you send to Eternaland all carry forward. Only the world and your base location reset.

For your first run, pick the Manibus scenario on Normal difficulty. It is the PvE on-ramp the game is designed around, with five phases, cooperative Prime War boss events and a final showdown against the Manibus itself. Skip PvP scenarios and hard-mode servers until you have finished one full season. The newer rotating content, including the pollution-zone twists of the Visionary Wheel seasons, is aimed at veterans and will still be there when you are ready.

Practical settlement tips for week one:

  • Build near water and a road. You need the first for farming and the second because you will drive everywhere.
  • Claim territory close to a Teleportation Tower, not inside a contaminated zone.
  • Do not overbuild early. A functional box with crafting benches beats a mansion you will relocate in phase two.

Deviations Are Your Second Inventory of Power

Deviations are the anomalous creatures you capture and deploy, and they are half the game. Some fight beside you, others work in your base, tending crops, cooking or generating resources while you are out in the world.

Three habits that separate functional players from struggling ones:

  1. Capture early and often. Bring Deviation-securing gear when you explore. Combat Deviations trivialize tough fights, and logistics Deviations turn your base into a passive income machine.
  2. Manage their mood. Deviations kept in bad conditions underperform. Give your containment units the lighting, music or environment each Deviation prefers.
  3. Chase the special ones. On current servers, certain Deviations can roll special abilities and altered colors. They are the closest thing the game has to shiny hunting, and the power difference is real.
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Memetics: The Tech Tree That Is Secretly Your Build

Your progression runs through Memetics, a tech tree fed by Ciphers and Energy Links. Every crafting bench, weapon tier and base structure lives here, and your Specialization choices each phase shape your entire playstyle.

Prioritize in this order during your first season: gear and weapon crafting benches first, then logistics like vehicles and storage, then base comforts. When a Specialization choice appears, take production and crafting perks over decorative options. You can adjust between seasons, so nothing is permanent, but a bad early pick slows an entire phase.

On weapons: chase blueprints, not random drops. Once Human's real arsenal comes from blueprint acquisition and upgrades, and sticking with one weapon family long enough to tier it up beats hopping between half-upgraded guns. Pick a build archetype early, whether that is status damage, fast-firing crit or shotgun burst, and feed everything into it.

Respect the Weirdness: Sanity, Contamination and Prime Wars

The Stardust-warped world actively fights you. Contaminated zones drain your Sanity, which caps your maximum health, so stock the food and items that restore it before diving into polluted areas. Weather and environmental hazards follow rules the game expects you to learn by observation, and the newer seasonal pollution zones make reading your surroundings even more important.

Do the Prime Wars. These scheduled cooperative boss battles are the game's best loot moments and require zero social commitment; show up, shoot the giant monster, collect rewards. Joining a Hive, the game's guild equivalent, makes them easier but is not mandatory.

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Conclusion

Once Human clicks the moment you stop treating it as a standard survival game and start treating it as a seasonal ecosystem: scenarios end, Eternaland preserves what matters, Deviations do your chores and Memetics defines your power. Start in Manibus, build small and smart, capture everything, and finish one full season before chasing the new monster-heavy content. By your second scenario, you will be the one telling new players not to panic about the wipe.

Marcus Hale
Guides editor

Live-service grinder with 3,000+ hours across gacha, MMOs and War Thunder. Writes every guide after reaching the content himself.

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