This dojo offers 3 challenges: 1) Pair-programming with many people, 2) Very short coding sessions, 3) Exploring different designs.
We will program a part of the Wumpus game. Each pair selects a different problem to solve/different design. One of the pair moves on every 15 minutes, nobody stays more than 30. You thus get to see many different designs, get to pair-program with most of the other participants, and practice knowledge & plan sharing.
This is an improved version of a dojo that we organized recently and that was quite popular with the participants: https://github.com/iterate/wumpus-diversity-032013/