hi HackerNews community, I am the creator of Font Playground
https://play.typedetail.com/, which debuted right from here as a Show HN post! Font Playground is a web app that allows you to experiement with variable fonts.
I have just updated the app with a bunch of new features, you can now create interesting compositions with variable fonts and save it to CodePen. You can reopen saved compositions later as well. Try out the font “Spooky”, it is ... spooky! It is part of 13 newly added fonts designed by the Black Foundry.