It wasn’t one to show your mother, and I vaguely recall there being some Mary Whitehouse-like backlash from the idea that you’re setting fire to government buildings. To help you further the conflagration, there were petrol cans lying around that could be picked up and spilt to help the fire spread to the corners of the floor. The idea was simple: you needed to set fire to the entire floor, destroying virtually everything in the floor while you legged it down the stairs to the next level. Behind you was a fuse that had a flame following it after a few seconds of starting the level. You were a pink square that needed to be controlled around the floorplans of various government buildings.
It was pretty basic looking, even for an early DOS game.