Not Steve here, but I was wondering if you were being sarcastic here:
> Make rust playful.
Why am I asking if you're being sarcastic?
> Make a game framework
> Make it build on a mobile device
https://www.bignerdranch.com/blog/building-an-ios-app-in-rus...
> Make it build on a Pi... without diarrhea
curl https://sh.rustup.rs -sSf | sh
> Make it build for the Arduino(An ARM based Arduino, AVR [which powers the original Arduinos] support is being worked on now)
https://github.com/jamesmunns/teensy3-rs
> Cross compile it to Javascript