These hilarious game mechanics work against all common rules. The idea is to work your way from "finish" to the starting field. You can call it Down Under, or Vice Versa, or Back to the Start or whatever you like.
It is very easy to turn any Snakes and Ladders game to Down Under with this little trick. Define the Starting field as the last field in the game. Set the finish field to be the first field.
Now teams need to work their way through the game answering wrong. Tip! Double choice questions are as tough to answer incorrectly as correctly.