UNDERTALE: Piano Puzzle Walkthrough and Hidden Room Rewards

Author: GameVillage Team

Last updated on: 2023/11/27 06:16

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Did you find the Waterfall piano puzzle in Undertale? Solve it with our guide, and discover hidden room rewards. This is your go-to guide for Undertale!

undertale_piano_puzzle_walkthrough_and_hidden_room_rewards

How to Solve the Piano Puzzle

Piano Room Puzzle

Steps to Solve the Piano Room Puzzle
1	Borrow an umbrella
2	Place the umbrella on the statue
3	Play the piano

【1】Borrow an Umbrella

Borrow an Umbrella

To solve the Piano Room Puzzle, go to the right side and find an umbrella. Borrow one from the spot with the umbrellas.

【2】Place the Umbrella on the Statue

Place the Umbrella on the Statue

After borrowing the umbrella, return to the statue's location. Put the umbrella on the statue, triggering the music box. After a moment, text will appear on the screen.

【3】Play the Piano

Play the Piano

Button Input Order
●　↑　→　●　↓　↓　→

Enter the buttons in the order shown above, from left to right on the statue's music box. This will reveal an entrance at the back, granting access to the Hidden Room.

Hidden Room Rewards List

Reward	How to Obtain
Annoying Dog	Examine the Legendary Treasure in the Hidden Room
Dog Residue	When you USE or DROP the Annoying Dog, your inventory will be filled with Dog Residue
Dog Salad	Can be obtained randomly when using Dog Residue

Money-making with Dog Residue

Dog Residue

1	Get the Dog Residue from the Piano Puzzle
2	Fill all your empty inventory slots by using one Dog Residue
3	Sell all Dog Residues except one
4	Repeat steps 2-3

Using Dog Residue from the Piano Puzzle will fill up all empty inventory slots with either Dog Residue or Dog Salad. Dog Residue is cheap, ranging from 1-4G, and Dog Salad is 8G. It is possible to effectively and infinitely earn gold by repeatedly selling them.

Efficient Ways to Earn Money

Things you can do in the Hidden Room

Investigate the Legendary Treasure in the Hidden Room

Legendary Treasure

When you investigate the Legendary Treasure in the Hidden Room, you can obtain the Annoying Dog. Furthermore, if you USE or DROP the Annoying Dog, it will disappear and fill your inventory with Dog Residue.

Obtain the Recovery Item Dog Salad

By using Dog Residue when there is space in your inventory, you have a chance to obtain the recovery item Dog Salad. However, even if there is space in your inventory, using Dog Residue may sometimes fill your inventory with Dog Residue instead of Dog Salad.

List of Recovery Items