Huge in Australia - Our iPhone Game Stats & Question?

As per an earlier post, we released an iPhone game called "Rainbow Ninja" which is a brain-training game. We did this for fun and to learn the development process. We released it roughly 6 weeks ago. At first we priced it at $1.99 price point. We sold over 100 units on day one. ~50 on day 2 ~Dropped to 30 for a week or so. Then down to consistently selling 10 copies a day. We decided about 2 weeks in to see what would happen if we gave it away for free. Downloads immediately jumped to the 500 a day range for days 1 - 5. That has built consistently to over 5,000 downloads per day. The game is on page 3 in the USA popularity for puzzle games. But what's NUTS is that 3000+ a day of those 5000 are coming from Australia. I can't find a tool to see the AUS store to see if we're featured or something, can't find any mention on websites etc. So - throwing it out there - anybody have a similar experience or know how to figure this out? If Australian's love the game we want to leverage that and promote! Thanks in advance -