His initial story featured unnamed villains that would eventually become LeChuck and Elaine; Guybrush was absent at this point.[13] He pitched it to Lucasfilm Games's staff as a series of short stories.[14] Gilbert's idea was warmly received, but production was postponed because Lucasfilm Games assigned its designers, including Gilbert, to Indiana Jones and the Last Crusade: The Graphic Adventure.[12] Development of The Last Crusade was finished in 1989, which allowed Gilbert to begin production of The Secret of Monkey Island, then known internally under the working title Mutiny on Monkey Island.[12][15]