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88% positive of 26 · Positive · Live from Steam
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Free on Steam. The demo has its own app, so its players are counted separately.
Travel through the solar system in your own spaceship! The motion of each celestial body is accurately reproduced by the Kepler equation.
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 88% on 2026-11-01 → 88% today (26 reviews)
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
・Fixed an issue where the game became unstable after launch.・Corrected a spelling error.
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 AssemblyWe 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 an…
・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 MethodWe 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-Mo…
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 …
Celestial Body MapYou can now check your spacecraft's orbit on a map of the celestial body.Open it with the MAP button on the spacecraft control panel. You can also show it inside the control panel by switching the display with the MFD SELECTOR button.The map …
Getting to Other PlanetsTransfers to the Moon and Mars can now be planned from a porkchop plot.Open the transfer dialog from the maneuver planner to see the required delta-v for every departure and arrival date at a glance; the transfer you pick is written str…
In-Game ManualThe 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 i…
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 ProgressWe’ve implemented detailed terrain display when approaching the moon’s surface, and landing is now possible.Whil…
Lunar LandingToday, 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…
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 ProgressWe released two updates in June.I think the most significant improvement was the enhancement of the physics simula…
Improved ocean renderingWe'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 durin…
Launch Physics ImprovementsThe 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 vel…
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 ProgressOne major change we made was switching the calculation of the selected spacecraft’s orbit from using Kepler’s equati…
Does not work on Steam Deck. Results from Valve's own testing.
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