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GitHub tag (latest by date) Travis (.org) master branch Travis (.org) develop branch

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Ct.js is a 2D game editor that makes its bet on good documentation, visual tools and smooth workflow.

For bugs, feature requests, developing questions, please use GitHub issues so we can better track them. For general support about making games, ask a question at our discord server.

Contributors needed!

Ct.js is a project maintained by CoMiGo, and programmed mainly by them as well, with little support from dear contributors and translators. And it sucks! Ct.js is a good game editor, but can be the best one, and one developer is not enough to transition it from a dream to a reality.

If you are willing to participate in ct.js' future, contact me at Discord (CoMiGo#7821) or Telegram (@CoMiGo). Or jump straightly to the main dev board for current issues.

Support ct.js on product-hunting sites:

Production builds

See the releases page or jump to page. Available for Windows, Mac and Linux.

Nightly builds

We have daily builds at This page will have nightly versions that are built from the develop branch from our repository. It means that you will get the latest features, improvement, bug fixes, and new bugs daily, out of the oven. app is strongly recommended.

Repo structure & tools

  • app — an NW.js app, with its configs and static files.
    • data
      • ct.release — the ct.js game library, aka its "core"
      • ct.libs — catmods (modules) that ship with ct.js. Feel free to create a pull request with your module!
      • i18n — UI language schemes. Open for pull requests! :)
  • src — a source folder that compile into /app folder at a build time.
    • js — different top-level scripts, including 3rd-party libraries.
    • node_requires — these are copied as is to the /app directory upon building ct.js, contain reusable code, and are meant to be used by require('./data/node_requires/…').
    • pug — HTML sources of editor's windows, written in Pug.
    • riotTags — components that drive all the logic in ct.js. Written in Pug and Riot.js v3.
    • styl — style sheets, written in Stylus.
  • branding — logos and icons belong here.
  • docs — official docs of ct.js. Edit them here.
  • DragonBonesJS — a dependency for enabling DragonBones' skeletal animation support in ct.js.
  • SSCD.jsa fork of a collision library for

Developing ct.js


See the main dev board for hot issues and plans for next releases. Prioritize the "Current release" column, then "To Do", then "Backlog", though if you really want a feature from a backlog to come true right here, right now, no one can stop you :)

Please leave a comment in issues you want to work on so that we can assign you to them and avoid occasional double work from several contributors.

Forking and installing the dev environment

Building ct.js requires Node and npm installed on your machine.

git clone ctjs
cd ./ctjs
npm install gulp-cli -g
npm install
gulp -f devSetup.gulpfile.js

Running ct.js from sources


Use gulp dev instead of just gulp to run a dev service with live-reloading without opening ct.js in its default manner. In either case, you can stop this service in the usual manner for your terminal, e.g. Ctrl+C. If you are encountering unexplained issues, especially when switching to a new branch, run gulp -f devSetup.gulpfile.js again.

VSCode can use this extension to run ct.js with an attached debugger. Before running the debugger, to allow live-reloading, run gulp dev.

Releasing ct.js

This is left for emergencies only, as Travis should prepare binaries for github and send them to as well

# Builds docs and adds them to ct.js app
gulp docs
# Recompiles source files, bundles docs, and bakes binaries
gulp packages

# Publishes prebuilt binaries to
# This assumes that you have an access to ct.js at :)
gulp deployOnly
gulp deployOnly --channel next # deploy to a specific channel

# Combines `gulp packages` and `gulp deployOnly`
gulp deploy

The first run will be slow as it will download nw.js binaries. Next runs will use cached files.

Naming conventions and references

Use Gitmoji-flavored Comigoji for naming your commits.

Use Comigo's CSS naming guide for styling

We have some references for ct.js' internals on our wiki.