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Firebird Software Ltd
Gyron was originally released in 2 parts, and . The first person to solve the puzzle in the Necropolis would win a Porsche 924 motor car or £12,500 cash. Since around 60 people did, a play-off was simultaneously organised in London, Spain and Denmark for a third challenge, specifically written for the event, . The winner solved the puzzle in 18 minutes.#Afterward, was published on budget.