The city, which is trying to resist the onslaught of the new versions of Powder Toy! Totally copyright, you are not aloud to use any part of this simulation in your works.
In fact, the city is "Totally free from the copyright, you are free to use any part of this simulation in your works". The original is save 2198 - "Destroyable city 5 (wth metro)" by dima-gord.