At the time a sequel to Indiana Jones and the Last Crusade: The Graphic Adventure was decided, most of the staff of Lucasfilm Games was occupied with other projects such as The Secret of Monkey Island and The Dig.[25][26] Designer Hal Barwood had only created two computer games on his own before, but was put in charge of the project because of his experience as a producer and writer of feature films.[25][26] The company originally wanted him to create a game based on Indiana Jones and the Monkey King/Garden of Life, a rejected script written by Chris Columbus for the third movie[26] that would have seen Indiana looking for Chinese artifacts in Africa.[26][27] However, after reading the script Barwood decided that the idea was substandard, and requested to create an original story for the game instead.[26] Along with co-worker Noah Falstein, he visited the library of George Lucas' workplace Skywalker Ranch to look for possible plot devices.[26] They eventually decided upon Atlantis when they looked at a diagram in "some cheap coffee-table book on the world's unsolved mysteries", which depicted the city as built in three concentric circles.[26] Falstein and Barwood originally considered the mythical sword Excalibur as the story's plot device, but the idea was scrapped because it wouldn't have easily given Indiana Jones a reason to go anywhere except England.[28]