Movies
Based on John Marsden's popular book series, the action film pulls in $3.8 million to easily see off competition from animated comedy Despicable Me and Angelina Jolie's Salt.
Inception and new release Going The Distance round out the top five, while Vampires Suck falls four places to number six.
Elsewhere, drama The Kids Are All Right, starring Annette Bening and Julianne Moore, is a new entry at number ten.
The box office top ten in full (figures in Australian dollars):
1. (-) Tomorrow, When The War Began - $3,862,193
2. (-) Despicable Me - $1,495,360
3. (1) Salt - $1,362,106
4. (3) Inception - $863,929
5. (-) Going The Distance - $827,626
6. (2) Vampires Suck - $579.467
7. (4) The Expendables - $557,498
8. (5) Piranha 3D - $508,140
9. (6) Step Up 3D - $369,386
10. (-) The Kids Are All Right - $329,950
Related Stories
Movie Reviews
'Top Cat: The Movie' reviewHanna-Barbera's classic cartoon makes a disastrous comeback on the big screen.
Movies Interviews
'Prometheus': Fassbender video interviewMichael Fassbender tells Digital Spy about his android role in Ridley Scott's Prometheus.
At the Movies
How many Snow White dwarves can you name?Nick Frost, Ray Winstone and more try to guess Snow White's classic dwarves.
Movies Galleries
'Prometheus' review: Does it live up to the hype?Digital Spy gives its verdict on Ridley Scott's much-anticipated sci-fi.
