Gibson later produced a second draft of his script in 1988, altering the overall tone of the screenplay fairly drastically — whereas the first draft is an action extravaganza very much in the vein of Aliens, the second draft radically scales back the number of Xenomorph antagonists to just three, and instead presents a story more akin to the claustrophobic horror of Alien. However, both iterations of Gibson's screenplay were turned down by the studio. His attempts were followed by Eric Red's unmade script.