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Watch trailer on Steam ↗Kepler Project
Kepler Project · Published by Kepler Project
Last updated 27 Sept 2026
Build rockets and shoot them into space. Once you reach orbit, you are halfway to explore anywhere in the Solar System.
Free
Embark on a thrilling simulation adventure where you design and launch rockets to explore the vast expanse of the Solar System. Build your way to orbit and beyond, turning dreams of cosmic travel into reality.
About this game
Build Rockets (coming soon)
Assemble custom rockets and spaceships from simple parts to find the right combination to reach your objectives!
We are developing a custom physics engine to reduce computational load, enabling higher performance for exploding rockets!
Shoot your Rockets into Space (coming soon)
Pilot your ship all the way from the launchpad to the surface of distant worlds!
This will become reality as soon as the surface and atmosphere simulation are added to our engine.
Explore the Solar System (work in progress)
Fly through the Solar System in real scale using our custom orbital engine that support very high accuracy calculations. No more round-off errors!
Non-Impulsive Maneuver
Our custom engine let you play with complex maneuvers and original trajectories.
features
- realistic simulation of orbital dynamics using Kepler laws and patched conics
- custom engine aimed for high performance and high precision
- smooth orbit rendering even in extreme cases
- deterministic simulation independent of time-wrap and SoI changes
- efficient physics simulation of ship dynamics using Runge-Kutta 4
- support for high time-wraps even while under acceleration
- accurate itinerary planning
System Requirements
Will my PC run this? →Minimum
Minimum:
- Requires a 64-bit processor and operating system
- OS *: Windows 7
- Processor: 1.5 GHz
- Memory: 512 MB RAM
- DirectX: Version 10
- Storage: 100 MB available space
Recommended
Recommended:
- Requires a 64-bit processor and operating system
- OS: Windows 10
- Processor: 3 GHz
- Memory: 2 GB RAM
- DirectX: Version 11
- Storage: 1 GB available space
Supported Languages
English, French






