Lister awakens on Starbug and learns that 200 years have passed and the Red D...
Red Dwarf
Season 6 Episode 3: Gunmen of the Apocalypse
Starbug is attacked by a Simulant battleship and infected with a virus which overrides it's navicomp. Lister, Rimmer and Cat use the AR machine to enter Kryten's mind, which has taken the form of the Wild West, in order to fight the virus.