Leisure Suit Larry 4: The Missing Floppies - Space Quest IV

Space Quest IV

Space Quest IV: Roger Wilco and the Time Rippers, another Sierra game, played with the idea extensively. Unbeknownst to the employees of Sierra On-Line, the disks were here apparently stolen by an agent of Sludge Vohaul, who used them to store his consciousness upon his demise in Space Quest II: Vohaul's Revenge.

Later, the floppies were found floating in space by scientists from the Xenon Super Computer Project. When the game was installed on the computer, Vohaul's consciousness was unleashed on the planet, and the events leading up to the fictional, future sequel Space Quest XII: Vohaul's Revenge II began. In Space Quest IV, Roger can erase the game off the supercomputer when he accesses its mainframe, but this is not mandatory to complete the game.