By Jake Coyle, AP Entertainment WriterNEW YORK -- The dystopian science fiction thriller Elysium topped the weekend box office with $30.5 million, according to studio estimates Sunday, enough to beat three newcomers, including the Jennifer Aniston comedy We're the Millers. Sony's ( SNE) Elysium, directed by Neill Blomkamp and starring Matt Damon, opened in line with expectations, but still debuted somewhat modestly for a $115 million action film. It couldn't match Blomkamp's previous film, the $30 million District 9, which opened with $37.4 million in August 2009. But Elysium was able to come out on top in a crowded weekend, with three other new wide releases: the R-rated Warner Bros. comedy We're the Millers, starring Jason Sudeikis and Aniston ($26.6 million over the weekend, a strong $38 million since opening Tuesday night); Disney's ( DIS) Cars spinoff Planes ($22.5 million) and Fox's fantasy sequel Percy Jackson: Sea of Monsters ($14.6 million over the weekend, $23.5 million since Wednesday). District 9 was something of a phenomenon: a relatively low-budget science-fiction film from a first-time, South African director that made more than $210 million worldwide and landed four Academy Awards nominations, including best picture. Like District 9, Elysium is rife with allegory, a futuristic tale heavy with contemporary themes of wealth discrepancy, health care and immigration. But it was also made with more than three times the budget of District 9 and added stars Damon and Jodie Foster. Rory Bruer, head of distribution for Sony, said the studio was proud to release an ambitious film like Elysium and said that it would be "very profitable" for Sony. The film launched internationally in a handful of markets, including Russia, taking in $10.9 million overseas. With the added star power of Damon and Foster, Elysium should be a bigger draw than District 9 was abroad. "International is going to be the big, big win on this film for us," said Bruer. The weekend was enough to push the box office just past the pace of last year, which means that despite several spectacular flops this summer, Hollywood's 2013 is currently equal to its 2012. The year-to-date gross of $7 billion is even with last year, although attendance is down 2.9%.