Curtailment

You are playing as a rat that got lost out of bounds while trying to cause mischief at a nuclear power plant.

Thankfully, all you need to do to continue this crime spree is to stay within the bounds of the windows that keep popping up and imbue them with the Rat Energy™.

There's no limit for how much trouble you can cause! All you need to do is to keep moving; and keep being a rat.