This is a pretty amusing game. Interprets the comic quite well, and the ways to control the elevator are fun to see, even if there aren't too many. The sound effects are well chosen and well-implemented, and the graphics are simple but nice, xkcd-styled images.
I do wish there were more settings/ways to cause chaos--maybe a mall shopper is holding bags or food, and you get points depending on how far it's flung, whether their items hit other people, etc. For now all you can do is control the speed of the elevator.
I do understand that this is a game jam project, so maybe that's why there is only one real feature. Seeing this expanded after the jam is over would be a delight. The concept is great, and what's here is well executed. Great job! :)
(Btw, my high score is 249. People seem to stop coming up the escalator after a certain point--was that intentional?)