I changed the wording a bit since F**k, Marry, Kill seemed a tad bit extreme lol.
List three K Drama character and the person after you states out of those three which one they'd kiss, marry, or smack, then they list three characters, and the game continues. If you've never seen the dramas the characters are from then you can base your decision off of the actor/actress who plays said character.
I'll start: Han Woo Tak (While You Were Sleeping), Jung Nam Gil (Go Back Couple), Yoo Deok Hwa (Goblin).