Progress of sorts

Well, nearly - you can't actually save or load level files, nor define completion goals, but it's getting there. It's also accessible from a working menu, which didn't exist a few hours ago, with working, saved options. :)

I know I said I wouldn't post another screenshot until I had some gameplay, but it's taking longer than I'd anticipated to get this stuff in place - not helped by the documentation for the behaviour of

pygame.event.set_blocked(None)
and
pygame.event.set_allowed(None)
being the wrong way round, leading to seemingly random lockups that took a good half hour to track down. Luckily I already suspected the event queue based on past experience, or it could have taken much longer!