Airlock Grotto Walkthrough

The Airlock Grotto is the Mortuga Submarine's exterior-facing maintenance chamber—colorful, humid, and narratively tied to Godrik Gripp hull work and Madam Tadpole wellness routines. Into Indie Games' July 16 submarine part-two guide ends here after the full early crew roster is met, making the grotto a natural checkpoint before mid-campaign suspicion escalation. This walkthrough documents verified launch-week steps: switchboard power requirement, blue magnetic needle recovery for Captain's Cabin pinboard, and Tadpole's introduction scene.

Access Requirements

• Complete switchboard plugs—exterior maintenance lights remain offline until Control Room wiring finishes.
• Visit after sweeping Bunk Rooms and optional Dream Chamber so payroll clues from piggy bank puzzle contextualize Tadpole dialogue.
• Expect map fast travel once initial grotto inspection pass completes, matching other submarine rooms.

Grotto Examination Route

1. Maintenance pouch: Collect the blue compass needle (315° engraving) required for late pinboard solution alongside red, silver, and gold needles from other decks.
2. Buoy markers: Compare grotto floats with town square fish market schedules—feeds Zephyr weather cross-examination.
3. Gripp optional tour: Trigger Godrik maintenance dialogue when he spawns post-power; counts toward Pressing Matters flavor if all suspects reach tier-two suspicion.
4. Madam Tadpole reveal: Final early-game crew introduction—begin formal interview after grotto intro animation; present piggy bank payroll slips before generic wellness questions.

Completing the grotto sweep marks the end of verified community “part two” submarine routes as of July 18, 2026—later chapter ordering and finale reconstruction remain undocumented in public walkthroughs we trust. Use Evidence Checklist to confirm grotto hotspots before pivoting to crew interviews marathon sessions. For platform-specific cursor tips in tight maintenance spaces, see Switch controls mouse-mode guidance.