Eureka! is a video game for the Commodore 64 and ZX Spectrum computers, developed by Ian Livingstone and published by Domark in 1984. Eureka! is a text adventure set in European history. It consists of five parts, each of which has to be loaded and played separately. The first four parts can be played in any order, but the fifth part can only be played after all the other parts have been completed. The parts are: At the start of Modern Caribbean, the game asks questions from each of the first four parts. You have to answer every question correctly to start the fifth part of the game.