Nope, not a quiz game...
I've been racking my brain and reading the Wikipedia synopsis of each episode trying to work out which one I'm thinking of. If it is even a Red Dwarf episode!
It involves period costume I think in the style of Pride and Prejudice, and a time travelling assassin droid or simulant out to kill Lister or one of the others. There's a period house, and a scene in the dining room with a confrontation between the assassin droid and our heroes. The assassin droid might have been in black armour.
It's not "The Inquisitor" episode, that's for certain, and it's not the episode where Kryten drives a tank up out of a lake. It's not the wax droids in a war episode, "Meltdown", either.