How many people own Kerbal Space Program?

2,000,000–5,000,000. Estimated band from SteamSpy, not a sales figure.

Player counts

How many people play Kerbal Space Program?

3,605

Playing right now

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.

We have been measuring Kerbal Space Program hourly since 8 August 2026. We do not backfill numbers from before that.

Playing right now: 3,605
Peak since we started tracking: 5,242
Estimated owners: 2,000,000–5,000,000 est.

Estimated band from SteamSpy, not a sales figure.

Questions and answers

How many people play Kerbal Space Program?: 3,605 (playing right now)
What is the peak player count for Kerbal Space Program?: 5,242
How many people own Kerbal Space Program?: 2,000,000–5,000,000. Estimated band from SteamSpy, not a sales figure.

Kerbal Space Program