The animated comedy, starring the voices of Will Arnett and Elizabeth Banks, took STG5.9 million ($A11.03 million) over the weekend, holding off stiff competition from Mr. Peabody & Sherman, which rose two places to second with STG1.6 million.
Kids' fantasy film Tinker Bell and the Pirate Fairy ranked third in the list, with takings of STG1.2 million, and the top five was rounded out by The Monuments Men, which fell two places to fourth with STG1.1 million, and sci-fi remake RoboCop with STG890,000.
* The Lego Movie opens in Australia on April 3.
