The Game Census
Kerbal Space Program cover art

Kerbal Space Program

Squad · Private Division · 2015-04-27

SteamGOGEpic Games Store

IndieSimulation

Modes: Single player · Perspectives: First person, Third person, Bird view / Isometric

Releases: Jul 15, 2016 (Xbox One), Apr 27, 2015 (Mac), Apr 27, 2015 (Linux), Apr 27, 2015 (PC (Microsoft Windows)), Jan 16, 2016 (PlayStation 4), 2017 (Wii U)

In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.

Kerbal Space Program is an Indie Simulation game released in 2015, priced at $39.99, with an estimated 2,000,000 .. 5,000,000 owners and Overwhelmingly Positive (96% of 146831 reviews).

1,831
playing now
96%
positive of 148k reviews
Overwhelmingly Positive
steam's rating (official)
2,000,000–5,000,000
owners (SteamSpy est.)
291
twitch viewers (latest)
48.5
viewers/channel (concentration)
87/100
critic score (7 outlets, IGDB)
86/100
IGDB user rating (205 ratings)
20
Nexus mods (19k downloads)
81/100
opencritic · strong · 74% recommend · from 41 critics
platinum
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$39.99
steam price (US)

1,831 players in-game as of 2026-10-14 10:00 UTC (census sample)

Kerbal Space Program is a 2015 space flight simulation video game developed by Mexican studio Squad for Linux, macOS, Windows, PlayStation 4, PlayStation 5, Xbox Series X/S and Xbox One. In the game, players direct the space program of a species of green humanoid aliens known as Kerbals. The game features a pseudorealistic orbital physics engine, allowing for various real-life orbital maneuvers such as Hohmann transfer orbits and orbital rendezvous.

Trailer

Kerbal Space Program trailer thumbnail

Kerbal Space Program Launch Trailer

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

Health check

Healthy
  • · 1,831 players in-game at the last census sample.
  • · 14,357 reviews in the last 8 weeks (~1,795/week).
  • · Review velocity up 189% vs the prior 8 weeks.
  • · Top 1% of 49,341 Indie games in the census by review count.

Health tier since 2026-08-28

Estimated sales: 3.7M–8.9M copies

Review-multiple estimate from 147,882 total reviews — how this is computed.

Current store prices

IndieGala$9.38-77%
WinGameStore$11.99-70%
GamersGate$12.00-70%
GOG$39.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $3.99 at Steam (2025-06-26) · bundled 5×via IsThereAnyDeal

12-month high $39.99 · on sale 152 of 204 observed days · $5.39 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
4.1k4.1k20182026Week of 2018-03-01: 722 positiveWeek of 2018-03-01: 192 negativeWeek of 2018-04-01: 254 positiveWeek of 2018-04-01: 168 negativeWeek of 2018-05-01: 320 positiveWeek of 2018-05-01: 563 negativeWeek of 2018-06-01: 373 positiveWeek of 2018-06-01: 366 negativeWeek of 2018-07-01: 243 positiveWeek of 2018-07-01: 98 negativeWeek of 2018-08-01: 173 positiveWeek of 2018-08-01: 68 negativeWeek of 2018-09-01: 126 positiveWeek of 2018-09-01: 17 negativeWeek of 2018-10-01: 137 positiveWeek of 2018-10-01: 18 negativeWeek of 2018-11-01: 1,400 positiveWeek of 2018-11-01: 30 negativeWeek of 2018-12-01: 239 positiveWeek of 2018-12-01: 20 negativeWeek of 2019-01-01: 236 positiveWeek of 2019-01-01: 15 negativeWeek of 2019-02-01: 196 positiveWeek of 2019-02-01: 19 negativeWeek of 2019-03-01: 194 positiveWeek of 2019-03-01: 16 negativeWeek of 2019-04-01: 140 positiveWeek of 2019-04-01: 23 negativeWeek of 2019-05-01: 229 positiveWeek of 2019-05-01: 21 negativeWeek of 2019-06-01: 1,076 positiveWeek of 2019-06-01: 42 negativeWeek of 2019-07-01: 1,249 positiveWeek of 2019-07-01: 35 negativeWeek of 2019-08-01: 317 positiveWeek of 2019-08-01: 25 negativeWeek of 2019-09-01: 193 positiveWeek of 2019-09-01: 19 negativeWeek of 2019-10-01: 537 positiveWeek of 2019-10-01: 20 negativeWeek of 2019-11-01: 3,001 positiveWeek of 2019-11-01: 31 negativeWeek of 2019-12-01: 1,898 positiveWeek of 2019-12-01: 34 negativeWeek of 2020-01-01: 1,753 positiveWeek of 2020-01-01: 34 negativeWeek of 2020-02-01: 1,526 positiveWeek of 2020-02-01: 21 negativeWeek of 2020-03-01: 1,661 positiveWeek of 2020-03-01: 32 negativeWeek of 2020-04-01: 1,371 positiveWeek of 2020-04-01: 27 negativeWeek of 2020-05-01: 1,426 positiveWeek of 2020-05-01: 25 negativeWeek of 2020-06-01: 1,555 positiveWeek of 2020-06-01: 54 negativeWeek of 2020-07-01: 1,470 positiveWeek of 2020-07-01: 23 negativeWeek of 2020-08-01: 996 positiveWeek of 2020-08-01: 20 negativeWeek of 2020-09-01: 722 positiveWeek of 2020-09-01: 9 negativeWeek of 2020-10-01: 1,112 positiveWeek of 2020-10-01: 28 negativeWeek of 2020-11-01: 1,381 positiveWeek of 2020-11-01: 36 negativeWeek of 2020-12-01: 1,485 positiveWeek of 2020-12-01: 41 negativeWeek of 2021-01-01: 1,460 positiveWeek of 2021-01-01: 43 negativeWeek of 2021-02-01: 1,114 positiveWeek of 2021-02-01: 32 negativeWeek of 2021-03-01: 978 positiveWeek of 2021-03-01: 19 negativeWeek of 2021-04-01: 828 positiveWeek of 2021-04-01: 18 negativeWeek of 2021-05-01: 1,021 positiveWeek of 2021-05-01: 21 negativeWeek of 2021-06-01: 1,356 positiveWeek of 2021-06-01: 47 negativeWeek of 2021-07-01: 1,094 positiveWeek of 2021-07-01: 41 negativeWeek of 2021-08-01: 857 positiveWeek of 2021-08-01: 34 negativeWeek of 2021-09-01: 819 positiveWeek of 2021-09-01: 34 negativeWeek of 2021-10-01: 788 positiveWeek of 2021-10-01: 36 negativeWeek of 2021-11-01: 949 positiveWeek of 2021-11-01: 27 negativeWeek of 2021-12-01: 908 positiveWeek of 2021-12-01: 34 negativeWeek of 2022-01-01: 981 positiveWeek of 2022-01-01: 32 negativeWeek of 2022-02-01: 713 positiveWeek of 2022-02-01: 21 negativeWeek of 2022-03-01: 774 positiveWeek of 2022-03-01: 27 negativeWeek of 2022-04-01: 785 positiveWeek of 2022-04-01: 33 negativeWeek of 2022-05-01: 818 positiveWeek of 2022-05-01: 32 negativeWeek of 2022-06-01: 772 positiveWeek of 2022-06-01: 29 negativeWeek of 2022-07-01: 826 positiveWeek of 2022-07-01: 25 negativeWeek of 2022-08-01: 736 positiveWeek of 2022-08-01: 22 negativeWeek of 2022-09-01: 738 positiveWeek of 2022-09-01: 26 negativeWeek of 2022-10-01: 884 positiveWeek of 2022-10-01: 31 negativeWeek of 2022-11-01: 998 positiveWeek of 2022-11-01: 199 negativeWeek of 2022-12-01: 1,057 positiveWeek of 2022-12-01: 58 negativeWeek of 2023-01-01: 1,072 positiveWeek of 2023-01-01: 55 negativeWeek of 2023-02-01: 1,012 positiveWeek of 2023-02-01: 43 negativeWeek of 2023-03-01: 953 positiveWeek of 2023-03-01: 58 negativeWeek of 2023-04-01: 559 positiveWeek of 2023-04-01: 32 negativeWeek of 2023-05-01: 424 positiveWeek of 2023-05-01: 17 negativeWeek of 2023-06-01: 531 positiveWeek of 2023-06-01: 17 negativeWeek of 2023-07-01: 666 positiveWeek of 2023-07-01: 35 negativeWeek of 2023-08-01: 480 positiveWeek of 2023-08-01: 21 negativeWeek of 2023-09-01: 486 positiveWeek of 2023-09-01: 28 negativeWeek of 2023-10-01: 460 positiveWeek of 2023-10-01: 24 negativeWeek of 2023-11-01: 481 positiveWeek of 2023-11-01: 21 negativeWeek of 2023-12-01: 547 positiveWeek of 2023-12-01: 17 negativeWeek of 2024-01-01: 480 positiveWeek of 2024-01-01: 23 negativeWeek of 2024-02-01: 449 positiveWeek of 2024-02-01: 17 negativeWeek of 2024-03-01: 456 positiveWeek of 2024-03-01: 21 negativeWeek of 2024-04-01: 412 positiveWeek of 2024-04-01: 17 negativeWeek of 2024-05-01: 486 positiveWeek of 2024-05-01: 18 negativeWeek of 2024-06-01: 601 positiveWeek of 2024-06-01: 23 negativeWeek of 2024-07-01: 618 positiveWeek of 2024-07-01: 24 negativeWeek of 2024-08-01: 434 positiveWeek of 2024-08-01: 6 negativeWeek of 2024-09-01: 524 positiveWeek of 2024-09-01: 25 negativeWeek of 2024-10-01: 363 positiveWeek of 2024-10-01: 11 negativeWeek of 2024-11-01: 429 positiveWeek of 2024-11-01: 6 negativeWeek of 2024-12-01: 445 positiveWeek of 2024-12-01: 13 negativeWeek of 2025-01-01: 446 positiveWeek of 2025-01-01: 17 negativeWeek of 2025-02-01: 502 positiveWeek of 2025-02-01: 13 negativeWeek of 2025-03-01: 607 positiveWeek of 2025-03-01: 18 negativeWeek of 2025-04-01: 512 positiveWeek of 2025-04-01: 16 negativeWeek of 2025-05-01: 476 positiveWeek of 2025-05-01: 12 negativeWeek of 2025-06-01: 526 positiveWeek of 2025-06-01: 78 negativeWeek of 2025-07-01: 1,036 positiveWeek of 2025-07-01: 36 negativeWeek of 2025-08-01: 592 positiveWeek of 2025-08-01: 54 negativeWeek of 2025-09-01: 430 positiveWeek of 2025-09-01: 22 negativeWeek of 2025-10-01: 539 positiveWeek of 2025-10-01: 19 negativeWeek of 2025-11-01: 507 positiveWeek of 2025-11-01: 13 negativeWeek of 2025-12-01: 569 positiveWeek of 2025-12-01: 15 negativeWeek of 2026-01-01: 524 positiveWeek of 2026-01-01: 12 negativeWeek of 2026-02-01: 684 positiveWeek of 2026-02-01: 21 negativeWeek of 2026-03-01: 734 positiveWeek of 2026-03-01: 31 negativeWeek of 2026-04-01: 2,916 positiveWeek of 2026-04-01: 70 negativeWeek of 2026-05-01: 4,116 positiveWeek of 2026-05-01: 88 negativeWeek of 2026-06-01: 1,877 positiveWeek of 2026-06-01: 45 negativeWeek of 2026-07-01: 1,500 positiveWeek of 2026-07-01: 45 negativeWeek of 2026-08-01: 1,300 positiveWeek of 2026-08-01: 25 negativeWeek of 2026-09-01: 885 positiveWeek of 2026-09-01: 20 negativeWeek of 2026-10-01: 312 positiveWeek of 2026-10-01: 2 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

4.6k1.8k2026-09-14 19:00 — 3,008 players2026-09-16 04:00 — 1,954 players2026-09-17 11:00 — 1,873 players2026-09-18 19:00 — 3,430 players2026-09-20 02:00 — 3,165 players2026-09-21 10:00 — 1,936 players2026-09-22 17:00 — 3,168 players2026-09-24 01:00 — 2,940 players2026-09-25 08:00 — 2,085 players2026-09-26 16:00 — 4,308 players2026-09-27 23:00 — 3,463 players2026-09-29 07:00 — 1,774 players2026-09-30 14:00 — 3,004 players2026-10-01 22:00 — 3,006 players2026-10-03 05:00 — 2,536 players2026-10-04 14:00 — 3,906 players2026-10-05 21:00 — 3,159 players2026-10-07 05:00 — 2,018 players2026-10-08 12:00 — 2,300 players2026-10-09 20:00 — 3,569 players2026-10-11 03:00 — 2,962 players2026-10-12 11:00 — 1,960 players2026-10-13 18:00 — 3,194 players2026-10-14 10:00 — 1,831 players
Concurrent players, hourly average, last 30 days (census samples).
11k1.3kMar 2013Aug 2026Mar 2013 — avg 1,317 · peak 3,068Aug 2013 — avg 3,386 · peak 7,082Jan 2014 — avg 3,859 · peak 8,507Jun 2014 — avg 2,886 · peak 6,147Nov 2014 — avg 3,176 · peak 6,015Apr 2015 — avg 3,424 · peak 17,644Sep 2015 — avg 2,809 · peak 5,076Feb 2016 — avg 3,677 · peak 6,683Jul 2016 — avg 2,755 · peak 4,694Dec 2016 — avg 3,036 · peak 6,354May 2017 — avg 3,056 · peak 5,647Oct 2017 — avg 2,874 · peak 5,252Mar 2018 — avg 4,755 · peak 10,156Aug 2018 — avg 2,708 · peak 4,723Jan 2019 — avg 3,728 · peak 6,520Jun 2019 — avg 4,354 · peak 7,690Nov 2019 — avg 3,308 · peak 6,045Apr 2020 — avg 4,358 · peak 6,689Sep 2020 — avg 3,081 · peak 4,885Feb 2021 — avg 3,983 · peak 6,519Jul 2021 — avg 3,720 · peak 6,405Dec 2021 — avg 2,857 · peak 4,915May 2022 — avg 3,210 · peak 5,542Oct 2022 — avg 3,204 · peak 6,249Mar 2023 — avg 3,898 · peak 8,575Aug 2023 — avg 1,770 · peak 2,760Jan 2024 — avg 1,852 · peak 3,019Jun 2024 — avg 2,021 · peak 3,381Nov 2024 — avg 2,092 · peak 3,395Apr 2025 — avg 2,142 · peak 3,630Sep 2025 — avg 2,103 · peak 3,578Feb 2026 — avg 2,551 · peak 4,239Jul 2026 — avg 4,000 · peak 6,569Aug 2026 — avg 3,468 · peak 5,216
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Chart history

PositiveNegative
87872026-09-222026-10-122026-09-22: 32 new positive2026-09-22: 1 new negative2026-09-23: 23 new positive2026-09-23: 1 new negative2026-09-24: 34 new positive2026-09-25: 31 new positive2026-09-26: 37 new positive2026-09-26: 1 new negative2026-09-27: 48 new positive2026-09-27: 1 new negative2026-09-28: 87 new positive2026-09-30: 20 new positive2026-09-30: 1 new negative2026-10-01: 32 new positive2026-10-01: 4 new negative2026-10-04: 37 new positive2026-10-04: 2 new negative2026-10-05: 36 new positive2026-10-06: 28 new positive2026-10-10: 34 new positive2026-10-11: 31 new positive2026-10-11: 1 new negative2026-10-12: 48 new positive
New Steam reviews per day (census review snapshots). Positive above the line, negative below.

Price history

$39.99$6.952015-01-012026-10-142015-01-01 — best price $17.992015-11-25 — best price $19.992016-06-22 — best price $23.992016-12-26 — best price $19.992017-09-14 — best price $23.992018-02-01 — best price $20.492018-06-09 — best price $35.992018-09-21 — best price $17.752018-12-31 — best price $14.002019-04-05 — best price $39.992019-06-26 — best price $9.992019-10-29 — best price $7.992020-01-19 — best price $39.922020-03-31 — best price $39.992020-06-27 — best price $33.792020-09-24 — best price $8.492020-12-05 — best price $37.992021-03-10 — best price $8.992021-06-18 — best price $9.992021-10-04 — best price $9.992022-01-06 — best price $33.592022-05-17 — best price $35.692022-09-09 — best price $39.992022-12-06 — best price $35.692023-03-15 — best price $39.992023-06-22 — best price $8.902023-10-09 — best price $9.992024-01-12 — best price $8.702024-04-08 — best price $36.862024-07-13 — best price $39.992024-10-19 — best price $10.002025-03-04 — best price $39.992025-06-28 — best price $10.682025-10-25 — best price $12.002026-02-04 — best price $39.992026-05-01 — best price $9.992026-07-30 — best price $9.992026-09-24 — best price $9.492026-10-14 — best price $39.99
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

1.5k2552026-05-30 — 477 pageviews2026-06-03 — 711 pageviews2026-06-07 — 494 pageviews2026-06-11 — 480 pageviews2026-06-15 — 387 pageviews2026-06-19 — 416 pageviews2026-06-23 — 386 pageviews2026-06-27 — 374 pageviews2026-07-01 — 367 pageviews2026-07-05 — 429 pageviews2026-07-09 — 351 pageviews2026-07-13 — 378 pageviews2026-07-17 — 375 pageviews2026-07-21 — 318 pageviews2026-07-25 — 355 pageviews2026-07-29 — 333 pageviews2026-08-02 — 354 pageviews2026-08-06 — 358 pageviews2026-08-10 — 324 pageviews2026-08-14 — 267 pageviews2026-08-18 — 342 pageviews2026-08-22 — 303 pageviews2026-08-26 — 345 pageviews2026-08-30 — 323 pageviews2026-09-03 — 303 pageviews2026-09-07 — 305 pageviews2026-09-11 — 293 pageviews2026-09-15 — 366 pageviews2026-09-19 — 293 pageviews2026-09-23 — 353 pageviews2026-09-27 — 335 pageviews2026-10-01 — 341 pageviews2026-10-05 — 322 pageviews2026-10-09 — 269 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Twitch viewers

5.2k02026-09-30 18:34 — 301 viewers2026-10-01 03:34 — 26 viewers2026-10-01 12:34 — 9 viewers2026-10-01 21:34 — 16 viewers2026-10-02 06:34 — 33 viewers2026-10-02 15:34 — 30 viewers2026-10-03 00:34 — 39 viewers2026-10-03 09:34 — 18 viewers2026-10-03 18:34 — 45 viewers2026-10-04 03:34 — 33 viewers2026-10-04 12:34 — 5 viewers2026-10-04 21:34 — 13 viewers2026-10-05 06:34 — 7 viewers2026-10-05 15:34 — 28 viewers2026-10-06 00:34 — 39 viewers2026-10-06 09:34 — 2 viewers2026-10-06 18:34 — 45 viewers2026-10-07 03:34 — 55 viewers2026-10-07 12:34 — 6 viewers2026-10-07 21:34 — 40 viewers2026-10-08 02:12 — 3,960 viewers2026-10-08 07:34 — 6 viewers2026-10-08 16:34 — 7 viewers2026-10-09 01:34 — 89 viewers2026-10-09 10:34 — 7 viewers2026-10-09 19:34 — 35 viewers2026-10-10 04:34 — 9 viewers2026-10-10 13:34 — 17 viewers2026-10-10 22:34 — 31 viewers2026-10-11 07:34 — 19 viewers2026-10-11 16:34 — 293 viewers2026-10-12 01:34 — 97 viewers2026-10-12 10:34 — 8 viewers2026-10-12 19:34 — 31 viewers2026-10-13 04:34 — 18 viewers2026-10-13 13:34 — 326 viewers2026-10-13 22:34 — 432 viewers2026-10-14 07:34 — 4 viewers2026-10-14 16:34 — 416 viewers2026-10-14 17:34 — 291 viewers
Hourly Twitch viewers (census snapshots).

Details

WindowsmacOSLinuxSingle-playerSteam Trading CardsSteam WorkshopPartial Controller SupportSteam CloudFamily Sharing2 DLC

9 supported languages: English, Spanish - Spain, Simplified Chinese, Japanese, Russian, French, Italian, German, Portuguese - Brazil

Post-launch support: 2 DLC released, first 2018-03-13, latest 2019-05-30 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Xbox One (Xbox)1,3360%44
PS4 (PlayStation)6800%45

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

FunnyIndieSpaceSci-fiPhysicsSandboxScienceBuildingModdableEducation

Census log

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

Players also track

StarMadeCreativerseUnclaimed WorldSol 0: Mars ColonizationFactorioJudgment: Apocalypse Survival SimulationForce of NatureDude Simulator

Similarity via IGDB.

Wikipedia ↗Official site ↗