ABYSS SIGNAL
Pilot a research sub through a lightless sea cave. Ping your sonar to
reveal glow cores, collect all eight, then ride the ascension shaft out.
- W / S thrust · reverse ← → / A D steer ↑ ↓ / Q E ascend / dive
- Space sonar pulse (reveals & scores nearby cores) · Shift boost
- P pause · R restart · M mute · drag on screen to steer (touch)
- Oxygen drains faster below 120 m. Hull hits cost integrity. 0 oxygen or 0 hull = lost dive.