■ EEL KNOW: Perfect Pitch Free Demo Available Now!

Here is what you can play in the free demo:

Enjoy a total of 10 pitch quiz stages!

Collect up to 10 unique garden eels!

Create your own custom pitch quizzes!

Send your custom pitch quizzes to your friends!

■About Game

Easy to sing. Hard to find.

Whether you're confident in your ear or not,

put your pitch to the test with help from stretchy garden eels!

Stretch Out Your Sense of Pitch

Adorable garden eels pop out of the sand and stretch or shrink to match the pitch of a melody.

EEL KNOW is a laid-back music quiz game where you use their movements as clues to identify the note at a specified point in the melody.

The rules are simple: listen closely, watch the garden eels, and choose the right answer!

Aim for a gold medal with a first-try correct answer while collecting a colorful cast of garden eels for your collection book.

You can also create original melodies up to 32 bars and share them with other players. Challenge your friends with tricky tunes, or create audience-participation quizzes for your livestream. Play casually—or take on the ultimate pitch challenge!

Clear Tough Quizzes and Complete Your Eel Collection

A new cast of unique garden eels appears with each melody.

Clear music quizzes to register the garden eels you meet in your collection book.

Take on progressively harder questions and collect adorable garden eels as you aim for completion!

Challenge Your Friends' Ears with Custom Melodies

Create original quizzes and share them with other players!

Place notes freely across up to 32 bars. Change the type of garden eel to switch between rock, classical, and other sounds, or adjust the tempo to create your own music quiz.

Make gentle melodies for beginners—or create impossible "super-hard" tunes that nobody can solve.

It's perfect for livestream activities, such as viewers challenging a streamer's difficult quiz, or streamers taking on quizzes created by their audience.

Recommended For

- Anyone who wants to relax with adorable characters

- Players looking for simple, easy-to-pick-up gameplay

- People who want to try a game about telling pitches apart

- Fans of medals and collection books

- Players who want to send custom melodies to their friends

- Streamers looking for audience-participation activities

■ Release Date Announcement

Launching November 11, 2026—Garden Eel Day in Japan.
Bringing a sea of healing and perfect pitch to your Steam library.