PART 01 · THE PROBLEM
The Craft & Engineering Challenge
When three climbers are suspended forty metres apart on vertical root-walls, traditional screen-space ping icons turn tense cavern descents into arcade UI soup.
PART 02 · IMPLEMENTATION
How We Built & Tuned It
Every shared climbing tether acts as a physical acoustic string. Tugging once sends a warm low pluck to anchored partners; tugging twice under load triggers a high harmonic warning alongside a travelling jade pulse down the rope.
PART 03 · PLAYER WAVE TAKEAWAY
What Playtesters Changed
Co-op pairs playing without voice chat completed vertical shaft rescues 34% faster using rope plucks and flare echoes alone.