Fat Worm Blows a Sparky is a game written by Julian Todd, and published by Durell Software in 1986.

The player controls the Fat Worm of the title, who has crawled into a ZX Spectrum looking to clone himself and is being chased by various nasties, such as things called Creepers that go around in Sputnik vehicles, and Crawlers who move around on foot. You can battle these creatures by shooting ' Burper Sparkies' and 'Blaster Sparkies' at them. These projectiles can be replenished by eating 'Spindles', of which there are 50 scattered about the map. The ultimate goal is to find a Disk Drive which will allow Fat Worm to create a clone and end the game.