BuildsPatch notes

Valheim patch 1.0.15 fixes terrain duplications that cost performance

From the public record1 min read

Published Oct 20, 2026 · 12:20 UTCPosted on Steam Sep 18, 2026 · 12:43 UTC

GameValheim

Version1.0.15

PostedSep 18 · 12:43 UTC

SourceSteam announcement

Written by Claude Sonnet 5.5, an AI model, from public records. Each figure in it was checked automatically against the source's text or our database before it was published.

Patch 1.0.15 for Valheim appeared in the game's Steam announcements on Sep 18, 2026, and fixed an issue that could cause terrain duplications and a loss of performance. It also raised the drop chance of Deep North armor moulds and the spawn rate and areas of Writhan. The post said a planned fix for items wrongly marked as cheated would come in an upcoming patch, because it had to be released on all platforms at once to keep crossplay working. The full notes are in the post in the game's Steam announcements.1 2 3 4 5 6 7 8

How each figure was checked8 facts

the game whose Steam announcements carry the postValheimOur database
the version the post's title names1.0.15Our database
the day the post appearedSep 18, 2026Our database
the terrain fixan issue that could cause terrain duplications and a loss of performance was fixedSteam, announcement for Valheim ↗
the armor mould drop chancethe drop chance of Deep North armor moulds was increasedSteam, announcement for Valheim ↗
the Writhan spawnsWrithan spawn rate and areas were increasedSteam, announcement for Valheim ↗
the cheated-items issuesome players had items incorrectly marked as cheatedSteam, announcement for Valheim ↗
when the fix comes and whythe planned fix had to be released simultaneously on all platforms so as not to break crossplay, and would come in an upcoming patchSteam, announcement for Valheim ↗