update · November 7, 2025

Icarus Update Adds Stone Brick Fireplace and Biome Preview

Icarus Week 205 expands base building with the Stone Brick Fireplace and offers a first look at the upcoming Geothermal Biome.

Icarus Week 205 expands base customization options with a matching fireplace for stone structures, alongside a developer preview of the hazardous Geothermal Biome coming in a future expansion.

Stone Brick Fireplace

Craftable at the Advanced Masonry Bench as a Tier 3 unlock, the Stone Brick Fireplace matches stone building sets for a rustic aesthetic. It functions as a wood-burning alternative to the Biofuel Fireplace, providing the same cooking speed bonus while offering a classic look for fortified settlements.

Geothermal Biome Preview

Developers offered an early look at the upcoming Geothermal Biome, a harsh environment featuring sulfur pools, steam-filled atmospheres, and deep crevasses. The region will introduce unique resources and extreme-environment creatures designed to challenge explorers.

Notable Bug Fixes

Stalkers no longer scale up drastically in size when struck by projectiles during combat. Tech tree tooltips now properly display required recipe resources such as milk, biofuel, and water. Tusker fur drop rates are also increased to match intended biome progression and spawn groups.

Why this patch matters

This update provides cohesive base-building pieces while building anticipation for the dangerous mechanics arriving with the Geothermal Biome.