Species, Starship, or Anomaly? was a guessing game played between two people, where one player thought of a species, starship, or spatial anomaly, and the other attempted to guess it using no more than fifteen questions.
In 2376, while travelling back to USS Voyager from the Kesat homeworld in the Delta Flyer together, Neelix begged Tuvok to play the game with him. The Vulcan considered it a waste of time, preferring quiet over amusement. (VOY: "Riddles")