Does this have a web-based playground? I find https://www.pythonscad.org/playground/ to be nice to try out the project.

Agreed! I’m already working on it, but it’s not quite ready yet. ETA is 1-2 weeks.

I was actually able to get a first version released just now: https://luacad.ad-si.com/playground It's still rather bare bones and won't work well for large models, but otherwise it should be fully functional!