The idea of an OpenFL code sandbox is something that has bounced for a long time. After we first released OpenFL on NPM, this idea resurfaced again, since the NPM release of OpenFL (and being included on JS CDNs) really makes it much simpler to begin playing with OpenFL without installing Haxe or anything else client-side.
I’d like to invite you to give it a try, and let us know how we can improve https://try.openfl.org and make it easier to use to create and share OpenFL code. Bear in mind, being in the browser, there are cross-origin security conditions on loading many images, but otherwise this is a great way to start writing OpenFL code (or sharing OpenFL code) right away!
Here’s a quick example:
Note: This may work better in Chrome or Opera than Firefox
EDIT: Here’s another two that were shared on the OpenFL Discord channel