PERMAFROST / Game systems
Building and shelter progression
Building tiers, blueprint unlocks and the role of shelters.
Tier effects
The building announcement links tiers with structural durability and indoor heat. It supplies no numerical comparison.
Sources: Permafrost：Building Blocks
Blueprint unlocks
Wood starts at Tier 1. The blueprint skill tree unlocks later tiers.
Sources: Permafrost：Building Blocks
Shelter network
Restoring shelters supports deeper exploration. Choose one that serves your next route.
Sources: Steam：永冻纪元 - Permafrost