The Game Census
planetarian HD cover art

planetarian HD

VisualArts/Key · VisualArts · 2017-05-08

Steam

AdventureCasualSimulation

Modes: Single player

Releases: Jul 29, 2016 (PC (Microsoft Windows))

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.

3
playing now
99%
positive of 3.4k reviews
Overwhelmingly Positive
steam rating
20,000–50,000
owners (SteamSpy est.)
70/100
IGDB user rating (1 ratings)
4h
to beat · completionist 4h
platinum
deck/linux tier (ProtonDB)
$9.99
steam price (US)

3 players in-game as of 2026-08-30 11:00 UTC (census sample)

"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." 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 Yumem(Storyline via IGDB)

Health check

Healthy
  • · 3 players in-game at the last census sample.
  • · 201 reviews in the last 8 weeks (~25/week).
  • · Review velocity down 8% vs the prior 8 weeks.
  • · Top 16% of 11,362 Adventure games in the census by review count.

Health tier since 2026-08-28

Estimated sales: 86k–206k copies

Review-multiple estimate from 3,425 total reviews — how this is computed.

All-time low: $2.99 at Steam (2023-08-07)via IsThereAnyDeal

12-month high $9.99 · on sale 6 of 12 observed days (census price snapshots)

Review momentum

PositiveNegative
717120182026Week of 2018-01-01: 22 positiveWeek of 2018-01-01: 1 negativeWeek of 2018-02-01: 26 positiveWeek of 2018-03-01: 9 positiveWeek of 2018-04-01: 17 positiveWeek of 2018-04-01: 2 negativeWeek of 2018-05-01: 16 positiveWeek of 2018-06-01: 23 positiveWeek of 2018-06-01: 1 negativeWeek of 2018-07-01: 20 positiveWeek of 2018-08-01: 15 positiveWeek of 2018-09-01: 9 positiveWeek of 2018-10-01: 10 positiveWeek of 2018-11-01: 15 positiveWeek of 2018-12-01: 15 positiveWeek of 2019-01-01: 17 positiveWeek of 2019-02-01: 29 positiveWeek of 2019-03-01: 15 positiveWeek of 2019-04-01: 9 positiveWeek of 2019-04-01: 1 negativeWeek of 2019-05-01: 31 positiveWeek of 2019-06-01: 23 positiveWeek of 2019-07-01: 27 positiveWeek of 2019-08-01: 15 positiveWeek of 2019-09-01: 12 positiveWeek of 2019-10-01: 17 positiveWeek of 2019-10-01: 1 negativeWeek of 2019-11-01: 24 positiveWeek of 2019-12-01: 30 positiveWeek of 2020-01-01: 30 positiveWeek of 2020-01-01: 1 negativeWeek of 2020-02-01: 34 positiveWeek of 2020-03-01: 50 positiveWeek of 2020-04-01: 26 positiveWeek of 2020-05-01: 54 positiveWeek of 2020-06-01: 28 positiveWeek of 2020-07-01: 32 positiveWeek of 2020-07-01: 2 negativeWeek of 2020-08-01: 27 positiveWeek of 2020-09-01: 8 positiveWeek of 2020-09-01: 1 negativeWeek of 2020-10-01: 9 positiveWeek of 2020-10-01: 1 negativeWeek of 2020-11-01: 14 positiveWeek of 2020-12-01: 24 positiveWeek of 2021-01-01: 28 positiveWeek of 2021-01-01: 1 negativeWeek of 2021-02-01: 19 positiveWeek of 2021-02-01: 1 negativeWeek of 2021-03-01: 16 positiveWeek of 2021-04-01: 32 positiveWeek of 2021-05-01: 26 positiveWeek of 2021-05-01: 2 negativeWeek of 2021-06-01: 12 positiveWeek of 2021-07-01: 25 positiveWeek of 2021-08-01: 24 positiveWeek of 2021-09-01: 7 positiveWeek of 2021-10-01: 10 positiveWeek of 2021-11-01: 23 positiveWeek of 2021-12-01: 39 positiveWeek of 2022-01-01: 32 positiveWeek of 2022-02-01: 17 positiveWeek of 2022-03-01: 29 positiveWeek of 2022-04-01: 32 positiveWeek of 2022-05-01: 11 positiveWeek of 2022-06-01: 26 positiveWeek of 2022-07-01: 26 positiveWeek of 2022-08-01: 16 positiveWeek of 2022-09-01: 11 positiveWeek of 2022-10-01: 26 positiveWeek of 2022-10-01: 1 negativeWeek of 2022-11-01: 32 positiveWeek of 2022-11-01: 1 negativeWeek of 2022-12-01: 38 positiveWeek of 2022-12-01: 1 negativeWeek of 2023-01-01: 40 positiveWeek of 2023-01-01: 1 negativeWeek of 2023-02-01: 17 positiveWeek of 2023-03-01: 22 positiveWeek of 2023-04-01: 8 positiveWeek of 2023-05-01: 30 positiveWeek of 2023-05-01: 1 negativeWeek of 2023-06-01: 17 positiveWeek of 2023-07-01: 32 positiveWeek of 2023-07-01: 1 negativeWeek of 2023-08-01: 71 positiveWeek of 2023-09-01: 39 positiveWeek of 2023-10-01: 42 positiveWeek of 2023-11-01: 33 positiveWeek of 2023-12-01: 46 positiveWeek of 2023-12-01: 1 negativeWeek of 2024-01-01: 40 positiveWeek of 2024-02-01: 32 positiveWeek of 2024-02-01: 1 negativeWeek of 2024-03-01: 52 positiveWeek of 2024-03-01: 1 negativeWeek of 2024-04-01: 25 positiveWeek of 2024-04-01: 1 negativeWeek of 2024-05-01: 59 positiveWeek of 2024-05-01: 1 negativeWeek of 2024-06-01: 50 positiveWeek of 2024-07-01: 42 positiveWeek of 2024-07-01: 1 negativeWeek of 2024-08-01: 24 positiveWeek of 2024-08-01: 1 negativeWeek of 2024-09-01: 25 positiveWeek of 2024-10-01: 21 positiveWeek of 2024-11-01: 28 positiveWeek of 2024-11-01: 2 negativeWeek of 2024-12-01: 34 positiveWeek of 2024-12-01: 1 negativeWeek of 2025-01-01: 27 positiveWeek of 2025-01-01: 1 negativeWeek of 2025-02-01: 18 positiveWeek of 2025-03-01: 64 positiveWeek of 2025-04-01: 24 positiveWeek of 2025-05-01: 27 positiveWeek of 2025-06-01: 22 positiveWeek of 2025-07-01: 44 positiveWeek of 2025-08-01: 20 positiveWeek of 2025-09-01: 20 positiveWeek of 2025-09-01: 1 negativeWeek of 2025-10-01: 27 positiveWeek of 2025-11-01: 33 positiveWeek of 2025-11-01: 1 negativeWeek of 2025-12-01: 35 positiveWeek of 2026-01-01: 27 positiveWeek of 2026-01-01: 1 negativeWeek of 2026-02-01: 16 positiveWeek of 2026-03-01: 16 positiveWeek of 2026-04-01: 17 positiveWeek of 2026-05-01: 18 positiveWeek of 2026-06-01: 26 positiveWeek of 2026-06-01: 2 negativeWeek of 2026-07-01: 42 positiveWeek of 2026-07-01: 1 negativeWeek of 2026-08-01: 22 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

702026-08-12 02:00 — 1 players2026-08-12 17:00 — 1 players2026-08-13 09:00 — 0 players2026-08-14 01:00 — 1 players2026-08-14 17:00 — 5 players2026-08-15 09:00 — 4 players2026-08-16 01:00 — 1 players2026-08-16 17:00 — 4 players2026-08-17 09:00 — 5 players2026-08-18 00:00 — 1 players2026-08-18 16:00 — 3 players2026-08-19 08:00 — 2 players2026-08-20 00:00 — 2 players2026-08-20 15:00 — 3 players2026-08-21 07:00 — 1 players2026-08-21 23:00 — 2 players2026-08-22 15:00 — 6 players2026-08-23 06:00 — 3 players2026-08-23 22:00 — 0 players2026-08-24 14:00 — 7 players2026-08-25 06:00 — 1 players2026-08-25 22:00 — 0 players2026-08-26 14:00 — 2 players2026-08-27 07:00 — 1 players2026-08-27 23:00 — 3 players2026-08-28 11:00 — 5 players2026-08-29 03:00 — 4 players2026-08-29 19:00 — 4 players2026-08-30 11:00 — 3 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$9.99$2.992017-05-082026-07-272017-05-08 — best price $7.992017-08-28 — best price $6.992017-12-21 — best price $5.992018-06-22 — best price $4.992018-11-21 — best price $4.992019-02-04 — best price $3.992019-05-16 — best price $4.492019-10-28 — best price $3.992019-12-19 — best price $3.492020-03-03 — best price $4.992020-05-21 — best price $4.492020-10-29 — best price $4.992020-12-22 — best price $3.992021-04-20 — best price $3.992021-06-24 — best price $3.992021-11-24 — best price $3.992022-01-27 — best price $3.992022-06-24 — best price $3.492022-11-22 — best price $4.492023-03-16 — best price $4.992023-06-30 — best price $4.492023-09-25 — best price $3.992023-12-21 — best price $2.992024-03-14 — best price $3.492024-06-27 — best price $3.992024-12-19 — best price $3.992025-03-13 — best price $3.992025-09-29 — best price $3.992025-12-18 — best price $3.992026-06-25 — best price $3.992026-07-27 — best price $9.99
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

21
achievements tracked
89.3%
earned "Started planetarian"
48.6%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsSteam Trading CardsSteam CloudFamily Sharing

7 supported languages: Simplified Chinese, Japanese, German, Traditional Chinese, French, Spanish - Spain, Spanish - Latin America

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)1,58565%21

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

CuteAnimeDramaCasualRobotsSci-fiAdventureEmotionalSimulationStory Rich

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Star Control®: OriginsSurvivalistLife is Strange 2Weapon Shop Fantasy

Similarity via IGDB.

Wikipedia ↗Official site ↗