In Once Human, Eternaland is a bit complex to understand at first, but to summarize things, this place acts as a Hub for players to preserve part of their progression. To understand how it works, first we need to talk about Seasons and Content progression, and also about the Eternaland Backpack, and of course, which items you are able to transfer from Scenarios to Eternaland.
This guide will provide all that information and explain the process you need to complete to ensure your items are safeguarded in Eternaland, carrying part of your progression throughout the seasons.

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How Does Eternaland Work in Once Human
Eternaland is, as the name implies, an eternal, immovable, and perdurable sort of progression in Once Human. It is unaffected by Scenario Shifts, and Structures you build stay there permanently. So it’s like a Hub you can build to store all the Weapons, Items, Blueprints, and Deviations you obtained during your exploits in the past Seasonal Scenarios, or Exchange them for Astral Sand.
That means in Eternaland there’s no Wipe; you can use it as a Sandbox builder. The Eternaland Backpack serves as a reservoir of everything you obtained, but some items cannot be taken out of Eternaland.
Building in Eternaland doesn’t have a material cost, but instead uses Astral Sand as currency. Astral Sand is formed when transferring mats and items from past seasons into Eternaland. That way, players can sort of keep part of their item value once the Scenario Shift (Season Reset) happens.
It works as a sort of Sandbox builder, but the major limitation Eternaland has is that things you create in there cannot be taken out to your current Scenario, nor be transferred between scenarios.
Which means every time you switch scenarios, your progress resets. But you can also choose to remain in the same scenario forever; that is also an option.
There’s a silver lining, though: Players have discovered a tremendously useful feature in Eternaland, which is the possibility of repairing currently equipped Gear using Astral Sand (since material costs are basically replaced as Astral Sand. That way, you can farm lots of low-grade mats, then transport them to Eternaland, and use your Repair Workbench to reset the durability of all your gear using Astral Sand.
That way, you can save lots of high-spec materials. In a sense, that is a form of keeping certain progression through scenario shifts, so not everything is lost.

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Now, in regard to cross-season progression, you have something called Scenario Backpack (the inventory of your currently selected character), and the Spacetime Backpack, which is the one you need to carry content throughout seasons. It works like this:
You build an Isolated Securement Unit in your current Scenario Base.
You transfer the items, weapons, and blueprints you want transferred to your Spacetime Backpack there.
At the end of the season, those items will not disappear, but be transferred to this Spacetime Backpack, which acts as a temporary inventory. You will have 30 days to move them to a new character in a new Scenario, or they will be transferred automatically to Eternaland and converted to Astral Sand.
At the start of the new season, you will be able to transfer a limited amount of items into the new scenario’s Scenario Backpack. That’s how cross-season item transfer works in Once Human. Quite convoluted, but that’s the only way.
How to Transfer Items to Eternaland & Get Astral Sand
Open the Eternaland Menu, then select the Shop Order tab. This will open a sub-menu where you can buy or sell materials using Astral Sand.
Navigate to the Sell Tab and sell items using the Eternaland Backpack to obtain Astral Sand. As mentioned before, this way you can sort of recycle past season gear you are not using anymore and prevent your gear from degrading at a high material cost in the current Scenario you are playing.
Just make sure to unlock and build a Repair Workbench in your Eternaland Base, otherwise, it will be pointless to do all this process.
You can also create an alternate (Pack Mule) Character and drop items from your main character. Then, relog to your Eternaland and pick those dropped items. It’s a sort of roundabout way to carry items between characters. But remember: No items crafted in Eternaland can be transferred to Scenarios. With the sole exception of harvested food, which you can use to feed your animals.

Once Human
Released
July 9, 2024
ESRB
Teen / Blood, Language, Suggestive Themes, Violence, In-Game Purchases (Includes Random Items), Users Interact
Developer(s)
Starry Studio
Publisher(s)
Starry Studio, NetEase, Inc.
