Fiendish Freddy's Big Top O'Fun is a video game developed by Gray Matter under developer Chris Gray and published in 1989 by Mindscape. It originally appeared on the 16-bit Atari ST, IBM PC and Commodore Amiga, before later being converted to the ZX Spectrum, Commodore 64, Amstrad CPC. The Commodore 64 version was included on the bundled cartridge of the ill-fated Commodore 64 Games System.
A corrupt businessman, whom the circus that the player owns owes $10,000, arrives on the scene with the intent of demolishing the circus unless it can pay up. He plans to build a set of luxury hotels on the terrain. In a fit of desperation, the showmaster organises a display of six events to raise money for the doomed circus: diving, juggling, trapeze, knife throwing, tightrope and the human cannonball. The performance in each event is judged by five clown judges, who offer money depending on the quality of the show. The businessman has no intention of letting the circus raise the cash though, and he sets his lackey, the evil Fiendish Freddy, loose to steal the show - literally.
The events in the game include Diving, Juggling, Trapeze, Knife Throwing, Human Cannonball and Tightrope.