Catspeak

A cross-platform scripting language and compiler back-end for GameMaker projects. Use Catspeak to implement, fast and sandboxed modding support by compiling and executing arbitrary user code from files or text prompt.

Possibly already used by one of your favourite niche GameMaker indie games.

Developed and maintained by Katsaii.
Logo design by Mashmerlow.

Homepage: https://www.katsaii.com/catspeak-lang/

// parse -> compile -> and run
var module = Catspeak.run(@'
  let catspeak = "Catspeak"
  return "hello! from within " + catspeak
');
// print result
show_message(module.result); // hello! from within Catspeak

Note: If you want a release to become available for download, let me know and I will do that for you. I only hide them to avoid bloating the releases page.