Space Quest IV: Roger Wilco and the Time Rippers is a 1991 graphic adventure game by Sierra On-Line. It was released on floppy disks on March 4, 1991, and released on CD-ROM in December 1992 with full speech support and featuring Laugh-In announcer Gary Owens as the voice of the narrator. It featured 256-color hand painted graphics and a fully mouse-driven interface. It was one of the first games to use motion capture animation. The game cost over US$1,000,000 to produce and sold more than its three predecessors combined. An Atari ST version was announced via Sierra Online's magazine, Sierra News Magazine, but was later canceled.

Space Quest IV: Roger Wilco and the Time Rippers is a 1991 graphic adventure game by Sierra On-Line. It was released on floppy disks on March 4, 1991, and released on CD-ROM in December 1992 with full speech support and featuring Laugh-In announcer Gary Owens as the voice of the narrator. It featured 256-color hand painted graphics and a fully mouse-driven interface. It was one of the first games to use motion capture animation. The game cost over US$1,000,000 to produce and sold more than its three predecessors combined. An Atari ST version was announced via Sierra Online's magazine, Sierra News Magazine, but was later canceled.