You’re welcome to add it. If you can include a link in there to the BAFTA Young Game Designers web site too, I’m sure they’d appreciate that.
It works on hardware too, I ran it on a Kittenbot Meowbit.
The code is all in Blocks and would be smaller if return values were available in functions. I raised this subject previously in Functions with a return value in Blocks. I’d imagine this has been discussed somewhere before, is there a reason to not offer return value(s)?