Just a bit of curiosity - what this is programmed in? Seems like a fun bit of challenge to figure out how to push that core mechanics to be able to go far and beyond!
Hey! (Didn't see the reply until now.) It's all JavaScript. The biggest problem is that I can't share arbitrary memory between threads so I have this convoluted solution that would be completely unnecessary in other languages. The simulation wouldn't be possible without multithreading so it's kind of frustrating but still fun to work on!