Collide is an event-based simulation of elastic collisions between balls. It demonstrates how a single OCaml code base can run on multiple platforms (see below). And it's mildly entertaining to watch.

It's licensed under the MIT license. Its source code is on GitHub.

Questions? Remarks? Bugs? Want to contribute? Open an issue!

Platforms

Web browser

Just go to http://jacquev6.github.io/Collide.

Native applications

Native applications can be installed using OPAM:

$ opam pin add --yes Collide https://github.com/jacquev6/Collide.git

You can then run the command-line application (generating video frames):

$ collide_cli --help

And the graphical application:

$ collide_gtk

Mobile applications

Thanks to Apache Cordova, Collide is available on the following app stores:

• Google Play
• Amazon Appstore

It should be easy to publish as an iPhone, BlackBerry or Windows Phone app, but I have not tried.