Help Caterpillar become a butterfly. Caterpillar needs to eat enough to develop into a butterfly. As a caterpillar you can cast silk strands to climb trees, and the world can be explored in any order.


  • Free Roam in a Bug World
  • Cast Silk Strands to Climb in Trees
  • Adventure can be Completed in Many Different Ways
  • 5 Secret Bonus Levels
  • 1 Non-Secret Bonus Level Added in Version 1.2
  • Import/Export Save

Input Methods

  • Keyboard (mouse is optional)
  • Gamepads
  • Touchscreen (Android, Web Browser)


  • Android: 2.3 and up
    • Only install the HTML APK if the other one can't install on your device.
  • Linux: Tested on Ubuntu 16.4.1
    • dependencies info included with download
  • Mac: Tested on 10.11.6 & 10.6.8
  • Windows: Vista/7/8/8.1/10

System Permissions

  • Android: none
  • Windows: no UAC prompt

Latest Update

Version 1.5.1 (Apr 18, 2021)


Buy Now$2.50 USD or more

In order to download this game you must purchase it at or above the minimum price of $2.50 USD. You will get access to the following files:

Installer (APK) for Android (32-bit) 8 MB
Installer (APK) for Android (HTML) 3 MB
Zip File for Linux 4 MB
App File for Mac 7 MB
Installer for Windows 6 MB
Zip File for Windows 5 MB

Download demo

Demo Installer (APK) for Android (32-bit) 8 MB
Demo Installer (APK) for Android (HTML) 3 MB
Demo Zip File for Linux 4 MB
Demo App File for Mac 7 MB
Demo Installer for Windows 6 MB
Demo Zip File for Windows 5 MB

Development log


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love the game. reminds me of seiklus and commander keen. enjoyd being a caterpillar. however... I cannot finish the "main level." stuck at 71/72. I can see the final leaf—it's at the upper far right in a tree cubby, but I can't jump high enough or string anywhere to get it. must have missed something, or I'm not doing it right. help or a hint would be appreciated

Think you for the comment and for buying the game! Sorry, there was a bug in the last update where I adjusted the hit boxes for some of the tree branches and it caused that spot to be unreachable. I'll fix it in the next update.

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oh, that makes sense. apologies for reporting the bug here then, I could've been more discreet about it. take your time with the update. I'm looking forward to digging into the bonus levels

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Thanks, I'm glad you still enjoyed the game. I'll be working on updates for my games/apps after I release my current project this month. Were you able to figure out how to unlock the bonus levels?

actually... no! I just assumed I had to finish the game. Hmm...


The update is up now. I fixed the problem with the leaf. I also made it so it displays how to unlock bonus levels at the bottom of the Bonus Levels menu.