planetarian HD
Released May 2017
planetarian HD is an engaging and emotional visual novel from legendary game studio, Key. A sub-brand of VISUAL ARTS, Key are also famed for creating Kanon, AIR, CLANNAD, Little Busters!, Rewrite, Angel Beats!, and Summer Pockets.
98% positive · 3,440 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $3.49 $9.99 −65%
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Evaluation
planetarian HD is the Steam HD release of Key's classic kinetic novel, launched on May 8, 2017. The game is a self-contained visual novel — a single, linear story with no branching paths, no DLC, and no post-launch content expansions. The store description presents it as a complete narrative experience. Developer communications since launch have consisted entirely of localization/language updates and minor bug fixes, with no announcements of new content, expansions, or roadmaps of any kind. The game launched as a finished product, and that remains its status today.
Evidence
Store description presents a complete, self-contained narrative kinetic novel with no mention of DLC, expansions, or ongoing content.
All 8 developer posts since launch are localization updates or bug fixes. No major content releases, announcements, or future content plans have ever been communicated.
Media
Details
Developer
Publisher
VisualArts
Achievements
21
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player
About this game
Why don't you come to the planetarium?
The beautiful twinkling of eternity that will never fade, no matter what.
All the stars in the sky are waiting for you.
planetarian HD is an engaging and emotional visual novel from legendary game studio, Key. A sub-brand of VISUAL ARTS, Key are also famed for creating Kanon, AIR, CLANNAD, Little Busters!, Rewrite, Angel Beats! and Summer Pockets.
Please do not divide Heaven in two...
It is thirty years after the failure of the Space Colonization Program.
Humanity is nearly extinct. A perpetual and deadly Rain falls on the Earth.
Men known as "Junkers" plunder goods and artifacts from the ruins of civilization.
One such Junker sneaks alone into the most dangerous of all ruins -- a "Sarcophagus City".
In the center of this dead city, he discovers a pre-War planetarium.
And as he enters he is greeted by Hoshino Yumemi, a companion robot.
Without a single shred of doubt, she assumes he is the first customer she's had in 30 years.
She attempts to show him the stars at once, but the planetarium projector is broken.
Unable to make heads or tails of her conversation, he ends up agreeing to try and repair the projector ...
For the first time, this heartwarming and memorable title is available on Steam!
It is fully voiced in Japanese, and can be experienced with both English and Japanese text.
Design, Scenario: Yuuichi Suzumoto
Music: Magome Togoshi
Voice Cast: Hoshino Yumemi - Keiko Suzuki
The Junker - Daisuke Ono
What is Kinetic Novel?
A new form of entertainment for the sole purpose of storytelling -- not a novel, not an anime, not a game -- Kinetic Novel.
Made with the goal of providing the reader with an unprecedented sense of presence and empathy for the characters through the use of a high-quality scenario, graphics, music, and other production values.
The beautiful twinkling of eternity that will never fade, no matter what.
All the stars in the sky are waiting for you.
planetarian HD is an engaging and emotional visual novel from legendary game studio, Key. A sub-brand of VISUAL ARTS, Key are also famed for creating Kanon, AIR, CLANNAD, Little Busters!, Rewrite, Angel Beats! and Summer Pockets.
Please do not divide Heaven in two...
It is thirty years after the failure of the Space Colonization Program.
Humanity is nearly extinct. A perpetual and deadly Rain falls on the Earth.
Men known as "Junkers" plunder goods and artifacts from the ruins of civilization.
One such Junker sneaks alone into the most dangerous of all ruins -- a "Sarcophagus City".
In the center of this dead city, he discovers a pre-War planetarium.
And as he enters he is greeted by Hoshino Yumemi, a companion robot.
Without a single shred of doubt, she assumes he is the first customer she's had in 30 years.
She attempts to show him the stars at once, but the planetarium projector is broken.
Unable to make heads or tails of her conversation, he ends up agreeing to try and repair the projector ...
For the first time, this heartwarming and memorable title is available on Steam!
It is fully voiced in Japanese, and can be experienced with both English and Japanese text.
Design, Scenario: Yuuichi Suzumoto
Music: Magome Togoshi
Voice Cast: Hoshino Yumemi - Keiko Suzuki
The Junker - Daisuke Ono
What is Kinetic Novel?
A new form of entertainment for the sole purpose of storytelling -- not a novel, not an anime, not a game -- Kinetic Novel.
Made with the goal of providing the reader with an unprecedented sense of presence and empathy for the characters through the use of a high-quality scenario, graphics, music, and other production values.
Last evaluated Jun 27, 2026
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