The Game Census
planetarian HD cover art

planetarian HD

VisualArts/Key · VisualArts · 2017-05-08

Steam

AdventureCasualSimulation

Modes: Single player · Perspectives: First person, Text

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.

planetarian HD is a 2017 Adventure, Casual, and Simulation game priced at $9.99, with an estimated 20,000 to 50,000 owners and an Overwhelmingly Positive review sentiment (99% of 3462 reviews).

0
playing now
99%
positive of 3.5k reviews
Overwhelmingly Positive
steam's rating (official)
20,000–50,000
owners (SteamSpy est.)
70/100
IGDB user rating (1 ratings)
1
Nexus mods (11 downloads)
4h
to beat · completionist 4h
platinum
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$9.99
steam price (US)

0 players in-game as of 2026-10-14 21:00 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)

Trailer

planetarian HD trailer thumbnail

Planetarian HD Trailer PC

≈1,000,000 YouTube results for this game's trailer search

Health check

Healthy
  • · 0 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 7% of 28,914 Adventure games in the census by review count.

Health tier since 2026-08-28

Estimated sales: 87k–208k copies

Review-multiple estimate from 3,462 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 5 of 10 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

902026-09-15 06:00 — 3 players2026-09-16 14:00 — 6 players2026-09-17 22:00 — 2 players2026-09-19 05:00 — 6 players2026-09-20 13:00 — 4 players2026-09-21 20:00 — 0 players2026-09-23 04:00 — 3 players2026-09-24 11:00 — 4 players2026-09-25 19:00 — 2 players2026-09-27 02:00 — 1 players2026-09-28 10:00 — 2 players2026-09-29 17:00 — 0 players2026-10-01 01:00 — 3 players2026-10-02 08:00 — 5 players2026-10-03 16:00 — 3 players2026-10-05 00:00 — 0 players2026-10-06 08:00 — 4 players2026-10-07 15:00 — 8 players2026-10-08 23:00 — 0 players2026-10-10 06:00 — 5 players2026-10-11 14:00 — 9 players2026-10-12 21:00 — 1 players2026-10-14 05:00 — 3 players2026-10-14 21:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).
100May 2017Aug 2026May 2017 — avg 10 · peak 118Aug 2017 — avg 1 · peak 8Nov 2017 — avg 2 · peak 12Feb 2018 — avg 2 · peak 13May 2018 — avg 1 · peak 5Aug 2018 — avg 1 · peak 6Nov 2018 — avg 2 · peak 7Feb 2019 — avg 2 · peak 8May 2019 — avg 2 · peak 12Aug 2019 — avg 1 · peak 6Nov 2019 — avg 1 · peak 7Feb 2020 — avg 2 · peak 8May 2020 — avg 3 · peak 15Aug 2020 — avg 1 · peak 4Nov 2020 — avg 1 · peak 6Feb 2021 — avg 1 · peak 4May 2021 — avg 2 · peak 8Aug 2021 — avg 1 · peak 6Nov 2021 — avg 2 · peak 6Feb 2022 — avg 2 · peak 10May 2022 — avg 1 · peak 4Sep 2022 — avg 1 · peak 5Dec 2022 — avg 3 · peak 13Mar 2023 — avg 2 · peak 7Jun 2023 — avg 2 · peak 6Sep 2023 — avg 3 · peak 12Dec 2023 — avg 3 · peak 10Mar 2024 — avg 5 · peak 21Jun 2024 — avg 2 · peak 8Apr 2025 — avg 3 · peak 7Nov 2025 — avg 4 · peak 13Jul 2026 — avg 4 · peak 11Aug 2026 — avg 3 · peak 8
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

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.

Where its players are

Share of Steam reviews by language (top languages measured) — a proxy for where the player base lives.

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 2The Last JourneyWeapon Shop FantasyDATE A LIVE: Ren Dystopia

Similarity via IGDB.

Wikipedia ↗Official site ↗