update · December 19, 2025
Icarus Update Week 211 Introduces Spiders, Arachnophobia Mode, and Double XP
Icarus Week 211 delivers nocturnal spiders, a toggleable arachnophobia mode, custom world settings, and a holiday double XP event. The massive update also brings extensive bug fixes, mount spawn adjustments, and a sneak peek at rideable woolly mammoths.
The latest major update for Icarus adds nocturnal spiders to biomes across Olympus, Styx, and Prometheus, accompanied by a double XP holiday event and a 90 percent off sale. Players who prefer to avoid eight-legged creatures can now disable them entirely using a new custom world setting.
Spiders and New Crafting Resources
Spiders emerge after dark in Forest and Grassland biomes, launching poisonous webs that slow player movement. Defeating these nocturnal threats yields Spider Silk, a new resource used in alternate crafting recipes for rope, bandages, and platinum weave. Spiders also feature unique trophies and bestiary entries. Forest spiders are programmed to wander no further than 2,500 units from their target cave.
Arachnophobia Mode and Custom World Settings
The Custom World Settings menu is now unlocked, introducing Arachnophobia Mode. Enabling this setting disables spider spawning entirely. For new prospects, the mode defaults to off, while existing prospects default to on to prevent unexpected creature spawns. The setting can be configured during prospect creation or at any time from the escape menu by hosts and admins, including dedicated server admins who log in accordingly.
Mounts, Quests, and General Improvements
Transport pods now spawn mounts in better areas near pods, falling back to a close-range navigable area when a direct path fails to prevent mid-air spawning. Cake pieces are now correctly pickable after reloading a session. The update also features extensive bug fixes for drone behaviors, lighting passes in Eden, dialogue adjustments, and preparation for next week's rideable woolly mammoth mount.
Why this patch matters
Week 211 packs a substantial punch by balancing fresh survival threats with crucial quality-of-life options like Arachnophobia Mode, all while setting the stage for holiday mammoths.