Once Human Wiki

Once Human is a free-to-play open-world survival game set in Nalcott, a world warped by a strange substance called Stardust. You play a Meta-Human: you scavenge and build to survive, fight twisted monsters with guns, capture anomalous creatures called Deviations, and push back the contamination across a huge shared map. This wiki covers the bosses, Deviations, scenarios, and systems you need.

How Once Human Plays

The loop is survive, build, hunt, specialize. You gather and craft to stay alive, raise and defend a base, and fight through a third-person shooter combat system rather than melee. What sets it apart is Deviations, the captured creatures that fight for you and automate your base, and Memetics, a deep blueprint tree where you unlock and specialize your weapons, gear, and builds.

Deviations

Deviations are the heart of the game. They come in three roles: Combat Deviations that fight and buff you, Territory Deviations that work or guard your base, and Crafting Deviations that produce consumables. A strong run means catching the right Deviations for your build and your base, and many players grab the same dependable picks at the start of every season.

Bosses and Monoliths

The contaminated world is full of Deviated monsters, and the biggest are the Great Ones, world bosses sealed inside Monoliths. Fights like the Treant, the Ravenous Hunter, and Arachsiam are gear and mechanics checks that drop the materials and blueprints you need to climb. Our boss pages break down where to find each Great One and how to beat it.

Scenarios and Seasons

Once Human runs on scenarios: time-limited worlds with their own rules, from the PvE intro of Manibus to the temperature survival of Way of Winter and the PvP of Evolution's Call and Prismverse's Clash. When a scenario ends the world resets, but your account unlocks and your permanent home, Eternaland, carry forward. That seasonal rhythm keeps the meta fresh and is why builds and Deviation picks shift over time.

Using This Wiki

Use the quick-access bar to jump to bosses, Deviations, or scenarios, and the left menu to browse the whole game. Every entry has an infobox so you can check a boss location, a Deviation role, or a scenario's rules at a glance.