This jam is now over. It ran from 2019-10-01 04:00:00 to 2019-11-01 04:00:00. View 13 entries

Invented in 1977, CHIP-8 is the original portable game platform. From humble specifications come inspiring creative constraints. The Octo IDE makes it easy to dive into developing CHIP-8 programs. Join us once again this October for a month of retro homebrew!


The rules are simple: Make a CHIP-8, SCHIP, or XO-CHIP program during the month of October and submit it. Using Octo is not required if you prefer some other tool, but we ask that you test your game using Octo's emulator for compatibility purposes.

Learning About CHIP-8:

The Octo GitHub Page has extensive reference documentation, including a tutorial for absolute beginners.

If you want some inspiration, have a look at the CHIP-8 Archive and see what others have created!

Submitting:

Use the "Save HTML" button in the "Binary Tools" panel of Octo's Toolbox to assemble a standalone HTML file for running your game. Depending on your browser, it may be necessary to manually add a ".html" extension to the saved file. You can then embed this HTML file in your game's Itch page.

When your program is finished, please consider also submitting a pull-request to the Archive in addition to submitting to Itch- this will ensure your contribution to CHIP-8 history can be easily accessed and re-hosted in the future.

New Features:

If you haven't used Octo recently, here's a rundown of new features to try out!

  • Totally overhauled web UI
  • Export programs to standalone HTML pages
  • Syntax highlighting and line numbers
  • Built-in GIF recorder
  • Support for creating "Cartridges" with an entire Octo project encoded into an image
  • Floating-point literals may now be used in constant expressions
  • Introduced :call operative for explicitly performing a subroutine call
  • :call and :org may now take immediate constant expressions
  • Scratchpad memory in 0x000-0x200 may now be re-written at compile time
  • New tutorial materials
  • Lots more!
All submissions
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A CHIP-8 Murder Mystery
Adventure
Play in browser
GIF
Turn the lights out
Puzzle
Play in browser
This is an improved implementation of Rule 30 in CHIP-8.
Simulation
Play in browser
A simple, small jam game made for Superchip Chip8 in Octo. Playable in the browser.
Action
Play in browser
Be a butterfly
Survival
Play in browser
GIF
A banner program for the 6th annual Octojam
Play in browser
GIF
Are you ready for the challenge?
Puzzle
Play in browser
Is it possible to satisfy your hunger?
Play in browser
GIF
Halloween Spooky Graphics
This is a simple CHIP-8 game in forty octets.
Survival
Play in browser
Golf for Octojam 6
Sports
Play in browser
Do your patriotic duty
Simulation
GIF
A chance to rewrite history for a better today
Play in browser