12 hours left and I'm beginning to painfully realise I probably tried to create too big a game. It's just not possible to actually playtest to any meaningful degree within the timeframe, and I'm at this point not even sure if the game as such is actually any fun. Also, there are some really annoying glitches and bugs that I'll probably just have to leave in there.
Will now try to catch a couple of hours sleep and see if it looks better when I return for the final hectic effort.