Once Human Patch 3.1.2 - Nailoong Crossover & More Changes

Once Human 3.1.2 goes live on November 4, 2026, after server maintenance that starts at 3:00 PM (PT) and is expected to last about 2 hours. The update brings the Nailoong crossover event, a first person combat overhaul, batch building tools for your Territory and new dye options.

If you sail the Isles of Abyss or run a custom server, there is plenty here for you too. We will go over every change in Once Human 3.1.2, from the event rewards to the smaller bug fixes.

Once Human 3.1.2 Highlights

• Nailoong crossover: the event runs from November 5 to November 25 (server time), and you can transform into Nailoong.
• First person overhaul: a reworked roll, smoother ladders, omnidirectional low climbs and left or right weapon switching.
• Batch Replace: swap skins on whole connected buildings, or on every facility of the same type, in one click.
• Custom dye: certain fashion sets and parts now support custom dye.
• Custom Server reviews: players can now post ratings and reviews on the Server Details Page.
• Next update: November 18, 2026, at 3:00 PM (PT).

After the maintenance, every player receives Starchrom x1,000, Mitsuko's Mark x100, Stardust Secret Crate S15 (Epic) x1, Colorful Badge x30 and Transformation Cookie: Nailoong x5.

Nailoong Crossover Event

During the event, shout "NAILOONG" in the World to receive a Transformation Cookie: Nailoong. Eat it and you turn into Nailoong, who can use the exclusive skill Tummy Battle in the wilderness. After the event ends, the transformation item, the Nailoong Disco Light and the Nailoong Photo Frame can no longer be used.

• Nailoong Party: get the limited-time Nailoong Disco Light through the Nailoong Check-In event and place it in the wilderness to invite passing players to dance.
• Nailoong Photo Frame: an exclusive collaboration frame for commemorative photos.
• Nailoong Egg: every Meta receives an egg and earns Hatch Attempts from daily activity tasks and friend-invite tasks. Rewards unlock at 30%, 60%, 85% and 100% progress, and the final prize is the Logging Beaver Deviation Skin "Carpenter Nailoong". Progress is shared across all characters on the same account.
• Nailoong Wheel: spend 1 Nailoong Draw Ticket per spin. Each round has 15 draws and includes 1 Super Grand Prize, the Cradle Charm - Shark Swim Ring.
• Nailoong Check-In: log in daily to claim rewards, including the Nailoong Disco Light.

First Person Combat and Exploration

1. Roll rework: the first person roll animation was redone to suit that view.
2. Ladders: you now move up and down ladders smoothly and continuously, in every view.
3. Low climbs: you can climb over low obstacles from any direction.
4. Weapon switching: a new "Camera Switch" button moves your weapon to the left side of the screen.

Territory Construction

The new Batch Replace feature lets whole connected buildings swap or remove material skins at once. Facilities of the same type in an entire building also support batch replacement and removal of cosmetics.

For design layouts, you can now move a whole house, pick a snap point while moving it, and see the material cost of a selected structure. You can also build single structures from a layout, and the game calculates the best support path for floating buildings.

The Isles of Abyss scenario adds two Water Territory facilities: the Straight Ladder, which you can climb while swimming, and the Rolling Shutter Door, which splits up a ship's interior. Facility limits for Water Territory and regular Territory are now separate.

Custom Servers and Social

• Custom Server and Official Server players can add each other as friends, send private messages and join group chats.
• Metas with at least 10 minutes on a server can post reviews on its Server Details Page.
• Server Hosts get a new privilege category, a more distinct font color with a Server Host label, and can set Server Entry and Login Gift Packs.
• New custom server additions include the Snowline Elite Vest, the SOCR Cosmic Visitor, the Heart of the Sunken dungeon and the Duet and Chaos Rebecca Deviations.

Balance and Gameplay Changes

• Voyagers: HP values in the wilderness were rebalanced against Ship Cannon damage, and Lv. 60 Voyagers got the biggest adjustments.
• Cannonballs: the DMG Multiplier of cannonballs, Mist of Deceit Wicks and Mist Core cannonballs is higher against the Calamity Tower.
• Ship Cannons: the chance of getting Lv. 6 Ship Cannons in Lv. 60+ land calamity zones on the Isles of Abyss is greatly increased.
• Boats: you can still steer a boat that weighs more than 10,000 kg.
• Beastmaster: a new Quick Commands setting lets you command animals with a Beast Whistle, and it is on by default.
• Sheep: they no longer scatter when you approach.
• Deviation rename: the Territory Deviation Lethal Rabbit is now Gentleman Rabbit, with no change to its function.

Fashion and Shop Updates

Custom dye now works on 24 fashion sets, such as Cloud Reverie, Skyline, Cambrian and Blackfire Skull, and on 25 fashion parts, such as Scroll Vision Glasses and Neon Horizon. Some Fashion Traits also changed: the maximum number of certain Traits you can equip at once rises to 2, and some Set Exclusive VFX work without the matching pieces equipped.

The Lightforge Loot Crate "Party Boing!" and the Combo Crate "Awoo's Adventure" arrive after the update. The Poem of Binding blind box follows on November 11 (PT) at 30 Crystgin per draw, with a limit of 60 draws and the Set Grand Prize guaranteed within them.

Other Improvements

• Xbox One controller support and PC controller vibration now behave like on consoles.
• The mobile Memory Optimization button no longer has a capacity threshold.
• Anti-cheat detection for character movement gives fewer false positives when you get stuck in terrain.
• You can set separate volumes for instruments, jukeboxes and radios in your Territory.

Once Human 3.1.2 Bug Fixes

• Naval Mines can be crafted again, and you unlock them in the Tech system.
• Optional materials are no longer missing during dish preparation.
• The interface displays correctly when you receive a shared Water Territory Design Layout.
• Rosetta Elite enemies in Securement Silo - ALPHA drop Access Cards when killed by lasers.
• The AoE damage radius text of the PDW90 - Holographic Resonance trait is now correct, with no effect on combat.
• The DMG Multiplier of Mist of Deceit Wicks and Mist Core cannonballs now applies against Voyagers and buildings.

And that covers all of the changes in Once Human 3.1.2. You can read the official patch notes on the Steam news page. For what came before, see our Once Human 3.1.1 patch notes, and for the sailing scenario, our guide to the Isles of Abyss server schedule and launch details.