FIREMAN (aka. The Big Heat) The temperature is rising down at the building site as Fred the fireman attempts to control the blaze. The Big Heat was written by Martin Kirkwood of Bexleyheath in Kent and runs on any Spectrum. Freddy must jump up the platforms, avoiding the debris that tumbles down, to get the fire hose at the top. Then he goes along the conveyor belt, dodging the spider, to put out the fire at the bottom.