Kessler Sky
Fill the sky. Don't break it.
About
Manage Earth's launch pad by strategically launching satellites. Dock them to build larger structures and earn income, but avoid collisions that create debris and lead to system failure. Compete with friends and complete daily contracts to keep the sky open.
What's New in Kessler Sky
1.0.0
September 14, 2026
Developer apps
FAQ
How do you launch satellites in Kessler Sky?
In Kessler Sky, you hold your finger anywhere on the screen to choose an altitude for the satellite. Releasing your finger launches the satellite. Releasing it straight creates an orbit, while releasing it off-center creates an ellipse.
What happens if satellites collide in Kessler Sky?
If satellites collide in Kessler Sky, they create debris. This debris continues to orbit and can shred other satellites or structures it encounters. If the debris overwhelms the sky, it leads to a game over, known as the Kessler syndrome.
Can I play Kessler Sky offline?
Yes, Kessler Sky is designed to play offline. Your progress is saved directly on your device, allowing you to enjoy the game without an internet connection.
Does Kessler Sky have ads?
Kessler Sky contains optional advertisements. You can choose to watch an ad to send the Sweeper drone or to double your in-game coins.
How do I build bigger structures in Kessler Sky?
In Kessler Sky, satellites of the same type and in the same orbit will dock together to form larger structures. There are seven tiers of structures, starting from a cubesat and progressing up to the Gateway.
What is the Kessler syndrome in Kessler Sky?
The Kessler syndrome in Kessler Sky refers to the game over state caused by excessive debris from satellite collisions. When the debris becomes too much, it leads to the closure of the sky, and it's considered the player's fault.
Are there any daily challenges in Kessler Sky?
Yes, Kessler Sky features three daily contracts that provide a specific goal for each gameplay session. There is also a 'Daily Sky' mode where everyone receives the same satellite queue once a day for practice.
What devices does Kessler Sky support?
Kessler Sky is available on iPhone, iPad, and iPod. It is designed for iOS devices.