A Valheim seed is not a difficulty setting or a loot table — it is the input to the pseudorandom generator that lays out the entire world. Same seed, same version, same map: identical continents, identical boss altar positions, identical Haldor spawn point. Different seed and you get a genuinely different 100-hour game.
That version qualifier is the part most seed lists leave out. Terrain and location placement have been changed by patches, so a seed praised in 2021 may open onto a rearranged map in 2026. The wiki itself flags several of its entries as outdated, and one of its speedrun seeds is dated to update 0.154.1. Read any seed list — including this one — as what that seed gave on the build it was tested on.
How to find your own seed
Your seed is shown in the main menu’s world list, next to each world’s name. You do not have to load the world to read it, which makes it easy to share a map with friends or look up before starting.
When you create a world, the seed field is pre-filled with a random string. Leave it alone for a surprise, overwrite it with a known seed, or type something memorable — the generator accepts arbitrary text, which is why you will see seeds like WorldEater and 42069lolxd alongside random alphanumeric strings.
Seeds documented as useful
These are the ones the wiki keeps as special or unique rather than generic.
| Seed | What you actually get |
|---|---|
WorldEater | All main biomes on the first continent, Haldor included |
Gremlin | Over 20 beehives plus Haldor on the first continent |
feret2 | First six biomes and the first three bosses on the spawn island; Eikthyr next to spawn; Elder, Yagluth, Bog Witch, Hildir and Haldor clustered on a ring island directly south; a quadruple leviathan spawn near the world centre |
Swamp | The Elder, Bonemass, Moder and Yagluth all on the same island east of spawn, within about a minute’s run of each other, with Haldor and Hildir close by and several leviathans around the spawn island |
42069lolxd | Haldor reachable by following the coastline and crossing to an attached island to the south |
sBIkiadtIh | Haldor on the starting island to the west, with Black Forest, Swamp and Mountains close by |
wVJCZahxX8 | Start in Meadows with Black Forest east and west and a Mountain west; Eikthyr near spawn, The Elder on another island south |
maypoleplz | A maypole on the starting continent, to the west |
jWM4fqFdSm | Two maypole locations very close together on the island southwest of spawn |
9934622021 | Once all five early biomes on the first island — the wiki now notes this one became a small island and is effectively a historical entry |
Two of these are comfort seeds rather than progression seeds. The Maypole is buildable only during the Midsummer window (1 June – 6 July) and is otherwise found standing in Meadows abandoned villages, where it cannot be rebuilt once destroyed. Its sole function is +1 Comfort, which extends how long your Rested bonus lasts — so a maypole on your starting continent is a small permanent buff you get without waiting for the calendar.
Seeds documented as hard
If you want the world to push back, these are the documented options.
| Seed | Why it is hard |
|---|---|
lduTRpBHca | Small starting island, very little Black Forest, mostly Meadows, no other biomes |
yfNmtqZ5mh | Small Meadows island ringed by Black Forest, with a large mountain on the far side |
nai4qtPKFt | Bosses spread out across the world with none on the starting island — the wiki’s own “very hard” label, though it now notes Elder and Eikthyr have moved onto the starting island |
xV2pLimZea | Tangled starting island with nothing nearby; the wiki frames it as a hunt for a Frost Queen |
The pattern behind the hard list is worth internalising: difficulty in Valheim’s map is a function of how far apart the bosses are, not how dangerous the starting biome is. A Meadows start with three bosses on one continent plays easier than a Black Forest start where Yagluth is four islands away.
Speedrun seeds
| Seed | Layout |
|---|---|
kpI0aXHSfz | Five bosses, their summon items and Haldor all on the starting continent — current as of update 0.154.1 |
TxCD10fTIP | Five bosses and biomes on one continent; two traders close by, one on the same continent, the other swim-or-raft distance |
lSB4fI46nV | Five biomes and four bosses on the starting continent, Yagluth on the adjacent continent, Haldor one island over |
HHcLC5acQt | Three bosses, five major biomes and Haldor on one continent, two more bosses an island away; pre-0.148.6 maps also had Moder on the starting continent |
kpI0aXHSfz is the strongest of the four on paper because it also places the summon items on the starting continent, which removes the fishing and hunting detours that usually cost a speedrun the most time.
How to check a seed before you commit
Three tools are linked from the wiki, and they answer different questions:
- valheim-map.world — generate a world from a seed, or upload a save file, and preview the biome map and points of interest outside the game. Best for “is this seed playable for what I want”.
- valheim.th.gl/maps/World — enter a seed and see biome map, boss altars, Haldor, Hildir, the Bog Witch, dungeons, runestones, ruins, ore deposits and forageables. Best for “where is the trader on this seed”.
- valheim.gaming.tools/seeds — pick a play style and search for worlds matching its goals. Best for “find me a seed that fits how I play”.
Previewing is one tab and thirty seconds. Starting a world you will abandon at hour six is not.
Which seed to pick, by goal
First playthrough, no spoilers wanted. WorldEater or Gremlin. Both remove the two things that stall new players hardest: sailing to find a trader, and running out of the early-game materials that cluster in one biome.
Playing with a group that meets twice a week. feret2 or Swamp. Boss proximity is the single biggest determinant of how much a short session actually achieves, and both put multiple bosses within reach of one trip.
Speedrunning. kpI0aXHSfz, and re-verify it on your current build before you start the timer. Speedrun seeds are the most version-sensitive entries on any list because their entire value is exact altar placement.
Building. maypoleplz or jWM4fqFdSm. A maypole on or near your starting continent is the difference between one base and a build you actually finish.
You want the world to fight back. lduTRpBHca. It is the only documented seed where the starting island is genuinely starved of Black Forest, which delays every metal tier.
Related guides
- Valheim hub — all guides for this game.
- Valheim console commands
- Valheim exploration guide
- Valheim biome progression guide
- Valheim base building guide