There is also a C codegen available, still WIP though.

Author here - Yes I am somewhat aware of these issues and I am working on a better output with a runtime to do stuff in a less cursed manner. Note that the freestanding subset of it is just a joke and shouldn't be taken seriously. I hope that the hosted one will be more complete and true to Scratch's official implementation.

> shouldn't be taken seriously

Are you trying to supply material for future Linux Sucks lectures? :)

Edit: I see that Lunduke agrees it is awesome.

(Outside of DSLs, Scratch impresses me as the one visual language to invest confidence in.)