I'd be interested in more technical details. What exactly is this? Is it something like a Pico8 but emulated in the browser, i.e. with an instruction set, some

I'd be interested in more technical details. What exactly is this? Is it something like a Pico8 but emulated in the browser, i.e. with an instruction set, something resembling a bare graphics API, etc etc? Or is it more like a high level framework for HTML5 games? A link to source code would be helpful, maybe some docs on writing your own games for this "console"