Mr Countdown.

You can join in with Mr Countdown by joining the Quiz channel on your talker:

> talker Quiz
You whisper to the small stick and the eyes add channel "Quiz" to the list.

And then starting a game with !countdown. If a game is already running, just chat your answers on the talker.

> quiz !countdown
(Quiz) Mr Countdown wisps: Welcome to Taffyd's Countdown.
(Quiz) Mr Countdown wisps: High scores: http://rima.sydmud.com/countdown/