On 11 June 1993, Hollywood changed forever. Jurassic Park was unleashed into US cinemas, and its impact on the movie industry sill reverberates to this day – from the studios competing to buy the rights to Michael Crichton's 1990 novel about a theme park full of genetically recreated dinosaurs, to the marketing and mass-release strategy that helped make it the highest grossing film ever at the time. Not to forget its innovative use of visual effects.