Last updated: July 2026
Mushroom Puzzle Box
Solve the Cargo Hold mushroom puzzle box in The Mermaid Mask: Dayglo, Evergleam, Illuminight, and Nevergleam counts with sun rotation.
Hidden inside the Cargo Hold tent, the mushroom puzzle box challenge appears only after you report investigation progress to Sinthia—a gate that prevents players from guessing species counts before understanding the lighting mechanic. KosGuides documents the solution: rotate the painted sun to observe how each mushroom species reacts to day versus night illumination, then enter counts for four categories on the box dial.
Species Behavior
- Dayglo: Glows only when the sun touches them—count under direct light.
- Evergleam: Always glowing regardless of sun position.
- Illuminight: Dark during day, glows at night—rotate sun away to count.
- Nevergleam: Never glows in either lighting state.
Story-Rich Showcase 2026 — The Mermaid Mask Segment
Verified Counts (Launch Build)
Launch-week guides from KosGuides report: Dayglo 3, Evergleam 2, Illuminight 4, Nevergleam 5. Rotate the sun slowly and tally each species before entering digits—Grimoire escalates hints after failed attempts per hint system rules. If a future patch rearranges tent props, trust in-game inspection over static screenshots.
The box reward feeds Cargo Hold archive threads and optional achievement progress for thorough explorers. Pair this puzzle with Cargo Hold walkthrough pinboard completion for efficient mid-deck routing.