Kerbal Space Program
#396 Most Played

Kerbal Space Program: Steam Charts

Active Players Stats for Kerbal Space Program

Current Players

3.9K

3,895 playing now

24H Peak

3.9K

3,920 peak today

All-Time Peak

23.5K

23,482 record

Steam Rank

#396

Most played on Steam

Last updated: 10/3/2026, 2:27:21 PM

Kerbal Space Program: Building a Space Program from the Ground Up

Kerbal Space Program casts players as directors of a space program run by the Kerbals, an alien race whose ambitions reach across the Kerbol system. Its central design turns spacecraft construction into a hands-on experiment: combine parts with distinct functions, then fly the resulting craft under realistic aerodynamic and orbital physics. Success is not guaranteed by a blueprint, and keeping the crew alive is part of the challenge.

The work extends beyond launches. Players pilot ships through complex maneuvers, explore the terrain of moons and planets, and can send crew members outside their craft. Docking makes it possible to assemble space stations, larger ships, and surface bases, while satellites can scan for biomes and anomalies. Communications networks and research add further layers to the effort of extending the expedition’s reach.

Three modes shape how that systems-driven play is approached. Science Mode ties experiments to new technology; Career Mode adds oversight of construction, strategy, funding, and upgrades; Sandbox opens the full set of parts and technology for unrestricted building.

Frequently Asked Questions

How many people are playing Kerbal Space Program right now?
As of the latest update, 3.9K players are currently playing Kerbal Space Program on Steam (3,895 exact). Data is refreshed every 2 hours.
What is the 24-hour peak for Kerbal Space Program?
The 24-hour peak player count for Kerbal Space Program is 3.9K (3,920 players). This is the highest number of concurrent players recorded in the last 24 hours.
What is the all-time peak player count for Kerbal Space Program on Steam?
The all-time peak player count for Kerbal Space Program on Steam is 23.5K (23,482 players). This record reflects the highest number of concurrent players ever recorded for this game.
Is Kerbal Space Program growing or declining?
Kerbal Space Program is close to its daily peak: current players (3.9K) are near the 24-hour peak (3.9K). Comparing current players to the all-time peak of 23.5K gives a sense of the game's long-term trajectory.
How does Kerbal Space Program rank among other Steam games?
Kerbal Space Program is ranked #396 in our latest recorded Steam player-count data.