Sign up to the Telltalegames newsletter and get a free copy of Sam and Max Season 2 Episode 1: Ice Station Santa OR Strong Bad's Cool Game 4 Attractive People Episode 4: Dangeresque 3. Simply click on the banner on the homepage, enter your email and then choose your game.
If you wish to purchase the full season of either of these games from the telltale store, you can use the order number of your free game (via the Past Purchases page or in the confirmation email) to receive an $8.95* discount by entering the number in the promo box using the respective link:
http://www.telltalegames.com/store/samandmax-season2-disc
http://www.telltalegames.com/store/sbcg4ap-upgrade
*all prices are in USD
Sure this is for Australia too?