Must be a depressing place to live
Totally with pickyerpoison on this one, but allow me to expand on his comment a little bit. I remember my lego city building activities were five or six hours of painstaking construction, followed by ten minutes of acting out a nuclear blast house by house. Pixtropolis seems to be run by people in the same vein. The real estate maps for this place would need large, colorful skull marks to indicate popular suicide spots, as well as which famous monuments have been destroyed by UFOs or Godzilla recently.
Not meant to knock anyone's artistic abilities, thematic choices or what have you, it just seems like Pixtropolis would be a town full of cool music, with a handful of traumatized survivors left to enjoy it. Despite the fact that you made a cool flash in a cool collab, it ends up being the same kind of aimless violence as the flash before yours, as well as the one after, and so they all end up running together.
I would be so presumptuous as to suggest you start over, but it might be a good time to consider adding a twist, like having a superhero catch the building jumper or what have you.