How many people are playing Kerbal Space Program?

Kerbal Space Program has 2,796 players in-game on Steam right now, and peaked at 2,990 concurrent players in the last 24 hours. The live count updates hourly.

Is Kerbal Space Program on Steam?

Yes. Kerbal Space Program is on Steam, and its live concurrent player count is tracked on this page and updated hourly.

Is Kerbal Space Program free to play?

No. Kerbal Space Program costs $39.99 on Steam.

Is Kerbal Space Program still popular?

Kerbal Space Program is holding steady. Over the past 30 days its player count is down 9%.

When did Kerbal Space Program release?

Kerbal Space Program was first released on April 27, 2015.

Kerbal Space Program

Apr 27, 2015IndieSimulationPlayStation 4LinuxPC (Microsoft Windows)MacWii U

Steam Store

Kerbal Space Programplayer count & live stats

Kerbal Space Program has 2,796 players in-game on Steam right now and peaked at 2,990 in the last 24 hours. Counts update hourly — last checked 54 minutes ago.

Holding steadyIts player count is down 9% over the last 30 days.

Platforms: PlayStation 4, Linux, PC (Microsoft Windows), Mac +5
Price: $39.99
First released: Apr 27, 2015

Kerbal Space Program player count

Kerbal Space Program has 2,796 players in-game on Steam right now — down 3% from 24 hours ago. Its 24-hour peak was 2,990 concurrent players. Updated hourly.

Playing right now

2,796-3% vs 24h ago

Steam concurrent players

Watching on Twitch

Concurrent viewers · hourly

2,990 24-hour peak

4,313 7-day peak

4,797 30-day peak

21,420 all-time peak

7-day daily average players

See top movers →

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7-day daily average viewers

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Live stats last updated 54 minutes ago.

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Kerbal Space Program monthly peaks

Highest concurrent players recorded each month, most recent first.

Peak players reached 21,420 in May 2026 and has since fallen 78%, to 4,797 in September.

Month	Peak players	Peak viewers	Share of peak
October 2026so far	4,747	5,069	22%
September 2026	4,797	9,988	22%
August 2026	5,216	4,351	24%
July 2026	6,547	4,505	31%
June 2026	9,151	2,022	43%
May 2026	21,420	4,680	100%

Liveon Twitch right now

Top 3 streams · 20 viewers

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Kerbal Space Program — frequently asked questions

How many people are playing Kerbal Space Program?: Kerbal Space Program has 2,796 players in-game on Steam right now, and peaked at 2,990 concurrent players in the last 24 hours. The live count updates hourly.
Is Kerbal Space Program on Steam?: Yes. Kerbal Space Program is on Steam, and its live concurrent player count is tracked on this page and updated hourly.
What platforms is Kerbal Space Program on?: Kerbal Space Program is available on PlayStation 4, Linux, PC (Microsoft Windows), Mac, Wii U, Xbox One, Nintendo Switch, Xbox Series X|S, PlayStation 5.
Is Kerbal Space Program free to play?: No. Kerbal Space Program costs $39.99 on Steam.
Is Kerbal Space Program still popular?: Kerbal Space Program is holding steady. Over the past 30 days its player count is down 9%.
When did Kerbal Space Program release?: Kerbal Space Program was first released on April 27, 2015.

About Kerbal Space Program

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. Launch your Kerbal crew into orbit and beyond (while keeping them alive) to explore moons and planets in the Kerbol solar system, constructing bases and space stations to expand the reach of your expedition.

Summary via IGDB.

Kerbal Space Program on Wikipedia

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.

Source: Wikipedia (text under CC BY-SA 4.0).

Game details

Platforms: PlayStation 4, Linux, PC (Microsoft Windows), Mac, Wii U, Xbox One, Nintendo Switch, Xbox Series X|S (s), PlayStation 5
Developer: Squad
Publisher: Private Division
ESRB rating: E
Game modes: Single player
Themes: Science fiction, Sandbox, Educational, Open world
Official site: Visit

Details via IGDB.

Reception

Steam reviews

Overwhelmingly Positive

148,037 reviews · 96% positive

Metacritic

88/100

Read reviews

IGDB rating

86/100

from 205 ratings

Every version compared

Prices, contemporary reception and the studio credited for each release

Also released on: PlayStation 4 · Linux · PC (Microsoft Windows) · Mac · Wii U · Xbox One · Nintendo Switch · Xbox Series X|S · PlayStation 5. We haven’t priced or authenticated those versions yet.