Kaeru no Tame ni Kane wa Naru Guides
An action RPG following the prince of the Sable Kingdom through the Mille-Feuille Kingdom. Switch between human, frog and snake forms, using upgrade stones and items to reach new places as you seek to rescue the captured princess.
Scope: Original Japanese Game Boy version (1992). Additional 3DS Virtual Console features are treated separately / Content checked: October 2, 2026
Start from your current situation
| Current situation | Action needed | Detailed article |
|---|---|---|
| You lose to the guard on the first palace visit | Collect the Bronze Sword, plus Power and Life Stones to the right of the entrance | Day 3 in the full walkthrough |
| You have become a frog | Waterway to the right in the palace → Diamond Key → Warp Door | Days 8-9 in the full walkthrough |
| A small block stops you | Receive the Wristband and push the block on the left | Day 15 in the full walkthrough |
| A large rock stops you | Nantendo's wasabi request → Work Gloves | Days 17-18 in the full walkthrough |
| The ice cave will not open | Red Riding Hood → Bairingaeru → Elder | Days 19-23 in the full walkthrough |
| You cannot beat the mammoth | After the first Mirror Shield battle, obtain the doctor's Controller | Boss guide |
| Your attacks do nothing in the final fight | Call reinforcements with the Z Flute, then charge through the hole in the barrier | Boss guide |
Check your upgrade-stone collection
Find the 11 Life, 7 Power and 3 Speed Stones individually. There is no experience-based leveling system, so revisiting missed stones and equipment is how you improve your chances.
Back to contents ↑Guide to the original Game Boy game
Covers progression in the Japanese 1992 Game Boy version. Towns and plains use a top-down view; caves and the palace use a side view in which you control movement yourself. Only battles after touching an enemy are automatic. Distinguish the 3DS version's suspend and backup functions from the original save system.
- No replay on original hardware has been performed. Numerical and progression discrepancies are covered only to the extent that they could be checked.
Palace visits 1-2
Unlock transformations and the Warp Door
- ・Take the Power Stone right of the entrance first
- ・Buy the Wooden Shield and Saw
- ・Collect the 2 stones in the diamond underground waterway
Third palace visit, island and gold mine
Upgrade from the Silver Sword to the Snake Killer
- ・Push the small block left of the entrance with the Wristband
- ・Touch the giant centipede at the tip of its tail
- ・Take the stones and tablet before pulling the sword in the gold mine
Palace visits 4-5
Recover stolen equipment and proceed to the final fight
- ・Take the club door to the prisoners' cells
- ・Collect the Life Stone during the prison escape
- ・Check the Z Flute and final 2 stones
Problem: You cannot enter the passage on the palace's left
Cause: You do not have the Wristband
Solution: Speak to the man in the hole and complete the A la Mode event
Problem: You cannot pass through the hole west of the hot springs
Cause: You are trying to take a low passage as a human
Solution: Use an Egg to become a snake, then press down to enter the opening
Problem: You cannot enter the hut on the northern cape
Cause: You do not have the Bairingaeru, or you kept waiting for the frog
Solution: Resolve the Red Riding Hood incident and enter the hut immediately after the frog
📖 Kaeru no Tame ni Kane wa Naru Full Walkthrough: Days 0-33 and 5 Palace Visits
Full walkthrough: days 0-33 and 5 palace visits — read →🎮 Kaeru no Tame ni Kane wa Naru Controls, Transformations, Automatic Battles and Saving
Controls, transformations, automatic battles and saving — read →🎒 Kaeru no Tame ni Kane wa Naru: 21 Upgrade Stones, Equipment, Keys and Items
L/P/S are checklist numbers used within this article, not coordinates on the in-game map. Life raises maximum hearts by 1 and heals on collection; Power raises attack, and Speed increases attack frequency.
21 upgrade stones, equipment, keys and items — read →
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