Developer posts and news about this game.
In-Game Manual The in-game manual has been overhauled to cover everything from the controls to reading your orbit. The same manual opens from both the Mission Control Center and the Vehicle Assembly Building. It is available in 11 languages and works without an internet connectio
Thank you for your continued support of “Keplerian Space Discovery.” Here is an update on our progress in July and our goals for August. July Progress We’ve implemented detailed terrain display when approaching the moon’s surface, and landing is now possible. While some adjustmen
・Fixed an issue where the game became unstable after launch. ・Corrected a spelling error.
Lunar Landing Today, July 20, 2026, marks the anniversary of Apollo 11’s historic first human landing on the Moon in 1969. To commemorate this event, we’ve made it possible for you to experience a lunar landing. Select “Training” from the debug console to display shortcut buttons
Thank you for your continued support of “Keplerian Space Discovery.” Here’s an update on our progress in June and our goals for July. June Progress We released two updates in June. I think the most significant improvement was the enhancement of the physics simulation during launc
Improved ocean rendering We've improved the way the ocean is rendered, making the area around the horizon look more natural. *Excluding the Tanegashima Space Center and the Uchinoura Space Center (we will address this in the future) Improved camera behavior during stage separatio
Launch Physics Improvements The flight dynamics calculation during launch has been changed from a rotating reference frame to numerical integration in an inertial reference frame. By giving the spacecraft the launch site's rotational velocity as its initial velocity at liftoff, t
Thank you for your continued support of “Keplerian Space Discovery.” Here is an update on our progress in May and our goals for June. May Progress One major change we made was switching the calculation of the selected spacecraft’s orbit from using Kepler’s equations to using the
We have fixed an issue where the orbital normal direction was reversed when performing an orbit-matching maneuver. We have added tooltips to the buttons on the spacecraft control panel.
Improvements to Part Connection During Rocket Assembly We have improved the behavior when parts connect to each other while is turned off. Previously, precise alignment was only possible along the green guidelines, but now precise alignment can be performed anywhere. Improvements
・Improved coordinate calculation method when changing SOI ・Changed the display order of save slots to sort by update date and time ・Changed the display order of the launch vehicle list to sort by last launch date and time
1.Change to Orbit Calculation Method We have changed the calculation method for the selected spacecraft’s orbit from using Kepler’s equations to using equations of motion. As a result, orbits passing near celestial bodies become more complex. When in the Earth-Moon system (within
We have added a button. This fast-forwards the timeline to the point immediately before the SOI changes. However, this feature currently has room for improvement. It may sometimes skip past the exact point where the SOI changes. This is due to inaccuracies in the logic used to ca
- Fixed an issue where the thumbnails for 7.5m/10m adapters were incorrect - Changed the initial minimum altitude in launch parameters to 120 km - Improved the automatic maneuver execution method - Hide the apogee marker for hyperbolic orbits - Enabled continuous input of launch
Fixed an issue where some parts remained after detaching a booster large enough to cause parts to protrude from the Interstage.
Fixed an issue where automatic maneuvers might not execute
Fixed an issue where the engine would fire during automatic execution even for maneuvers with Δv of 0 km/s
Fixed an issue where "ABORT" a spacecraft orbiting the Sun caused an abnormal termination.
We have ensured that the stage automatically detaches even while a maneuver is in progress.
- Fixed an issue where the rocket would assume an abnormal attitude when attempting to launch a rocket without an engine on the first stage - Fixed an issue that occurred when boosters were attached to the second stage or later - Displays a message during launch when the thrust-t