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Planet Nine Original Soundtrack

This is additional content for Planet Nine, but does not include the base game.

Release Date:
Sep 29, 2026
Developer:
Publisher:
RED GAUGE STUDIO
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Downloadable Soundtrack

This is additional content for Planet Nine, but does not include the base game.

Buy 第九惑星 Soundtrack

$3.99
Add to Cart

Buy Planet Nine + Original Soundtrack BUNDLE (?)

Includes 2 items: Planet Nine, 第九惑星 Soundtrack

Bundle info
$10.98
Add to Cart
 

About This Content

Let the music carry you into the cosmos.

This is the original soundtrack to Planet Nine, a puzzle game where you launch planets and merge them together.

Experience the beauty and mystery of space, along with a gentle sense of weightlessness. Enjoy the music that brings the game's universe to life, even when you're not playing.

Whether you're working, taking a break, or dreaming of the stars, find your favorite track and immerse yourself in the universe of Planet Nine.

AI tools were used in the creation of the music on this soundtrack.

Supporting Cat Rescue

We will donate 50% of the proceeds from sales of this soundtrack, after deducting Steam fees, refunds, and similar deductions, to support cat rescue.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

This soundtrack includes music created using generative AI tools during production. All tracks are provided as pre-recorded audio files. No AI content is generated during playback, and the soundtrack does not connect to external AI services.



Track Listing

1
Title
4:02
2
Main Theme
3:18
3
Planet 9-Ball
3:10
4
Floating in Orbit
4:36
5
惑星たちの遊び
2:28
6
stellite
3:25
7
Echoes of a Gentle Hope
4:44
8
あっちとこっち
2:57
9
Floating Puzzle
2:33
10
NearFuturePrecisionMechanicalArt01
2:26
11
Moonlit Prism
3:15
12
Fractured Prism
5:02
13
If You Are Out There
3:20
14
STAR-borne OR-bit
4:05
15
重力ゼロの放課後
2:34
16
cosmic cracker
3:17
17
cafe time -planet-
3:00
18
Zero-G Carnival
2:17
19
Circling Winds, Orbiting Stars
2:50
20
Osanpo Orbit
2:06
21
Meteor Shower
3:15
22
Floating Lights
3:58
23
Go with the flow
2:55
24
Cradle of Perihelion
3:05
25
shala-da-doo
3:31
26
Pixel Space
2:58
27
To The Moon
3:01
28
いいお買い物でしょ！
1:05
29
Lagrange
2:37
30
ぶつけてくっつけて
2:44


Credits

Artist: Various Artists
Composer: Various Artists
Label: RED GAUGE STUDIO

System Requirements

Windows
macOS
    Minimum:
    • Storage: 250 MB available space
* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.
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