A downloadable simulation for Windows

Buy Now$2.00 USD or more

Chunky Orbits is a simulation of free-floating objects in space based on real life physics. Each object in the scene attracts each of the others in a cosmic tug-of-war that we call Gravity. Tap out a few boulders and contemplate the wonders of the Universe. 

Get up-close and personal with Gravity.

Fill your Universe with a collection of cosmic chunks: boulders, white dwarfs, comets, and chunky fireballs. Add some trails to your rocks to trace their paths. Or bust out the sparkly photon cannon - a delete button with a kick! It's a big physics based playground. Create a random cluster of boulders and watch as they collect into larger, chunky groups. Launch a super-massive White Dwarf and observe how it affects the other bodies in the system. Create a small 'solar system' and see how many chunks you can get into orbit. 

Now available to sideload on Oculus Quest
PC version for Oculus Rift, HTC Vive, and other SteamVR headsets.

No VR? Try Gravitas on your monitor or Android device.

Oculus Quest Changelog:

October 11th, 2019 - v0.91

  • Initial conversion to Oculus Quest
  • Upgraded from Unity 5.6 to 2019.1
  • Converted fro UnityScript to C#
  • Switched from SteamVR to Oculus SDK
  • Known Issues:
    • No music
    • Some Reboot orbits are messed up because old me was a dumbass.  
    • Reboot flash is annoying and too much in-your-face
    • Still can't get the throwing release just right. Still best to use a pushing motion.

SteamVR ChangeLog:

June 23rd - v1.11

  • Fixed a bug where the player would move in the wrong direction after rotating using the right stick. 

April 26th, 2017 - v1.1

  • New movement option.You can now move around the sim with controls that are similar to classic first person controls. Use the left touchpad/stick to move and the right touchpad/stick to rotate. You can also point with your left hand to modify your direction or go backwards by pulling back on the left touchpad/stick. The old 'accordian' style movement is still available for those who like it.
  • Change your scale by pressing in on the right touchpad/stick and then pushing it forward or back.
  • Gamepad users now need to press the Start button on the menu menu instead of the A button.
  • Some small changes to the way the main menu detects input and decides whether to launch the gamepad or tracked controller version of the sim.
  • Updated to Unity engine v 5.6
  • Updated to SteamVR plugin v 1.2.1

See the full ChangeLog

Rated 5.0 out of 5 stars
(2 total ratings)
AuthorDon Whitaker
Made withOculus Rift
TagsGravity, Oculus Quest, Oculus Rift, Physics, quest, toy, Virtual Reality (VR)
Average sessionAbout a half-hour
InputsXbox controller, Oculus Rift, HTC Vive


Buy Now$2.00 USD or more

In order to download this simulation you must purchase it at or above the minimum price of $2 USD. Your purchase comes with a Steam key. You will get access to the following files:

Gravitas VR version 0.92 248 MB
ChunkyOrbits111.zip 271 MB
Chunky.apk v0.92 for Oculus Quest 79 MB