Kerbal Space Program was initially released to the public as an early access game on Steam and other platforms, introducing players to its space flight simulation experience.
The official 1.0 version of Kerbal Space Program was released, marking the game's full version with stable features including a complete career mode and milestone for the community.
Kerbal Space Program Enhanced Edition was released for console platforms such as PlayStation 4 and Xbox One, expanding the game's availability beyond PC.
Pioneer developer Squad sold the rights of Kerbal Space Program to Private Division, a publishing label of Take-Two Interactive, marking a new phase of development and support.
Private Division announced the development of Kerbal Space Program 2, the sequel to the original game, promising improved graphics, enhanced gameplay, and new features.
Establishment of the primary space agency responsible for the exploration and colonization efforts in the Kerbal solar system.
Launch and recovery of a craft performing a suborbital flight, marking the first successful test of Kerbal rocket technology.
Kerbal engineers achieve a stable low Kerbin orbit, confirming spaceflight capabilities.
First Kerbalnaut completed a full orbit around Kerbin, proving human spaceflight viability.
Initiation of program aimed at landing Kerbals on the Mun.
Successful landing of Kerbals on the Mun and safe return to Kerbin, confirming interplanetary exploration capabilities.
Launch of an unmanned probe to Minmus, the smaller moon of Kerbin, to conduct scientific experiments.
Construction of a permanent base on the Mun surface to support long-term operations.
Kerbalnauts complete a manned mission to Minmus and return safely to Kerbin.
Official beginning of missions aimed at exploring other planets in the Kerbol system.
Successful launch and data collection from a probe orbiting Duna, the Kerbal equivalent of Mars.
Kerbalnauts perform the first manned landing on Duna and return, representing a major achievement in interplanetary exploration.
Establishment of a semi-permanent base on Duna to support further scientific and exploration efforts.
Kerbal spaceflight team successfully executes a gravity assist maneuver to extend mission ranges and efficiency.
