Simon actually managed to solve the bug in his Bit invader code! This is a game he was translating from Codea into JavaScript, we have already published a blog post about it here.
The project is available on Simon’s page in Codepen:
https://codepen.io/simontiger/project/editor/AdyVmr/
In the two videos below Simon explains what the bug was (he had forgotten a “break” statement). He insisted I include both videos, but actually only the second one is informative:
Simon still needs to add explosions to this game (make the enemies explode), so there will probably be a follow-up on this one.
Geeks out of the box 