Despite falling in line with the sci-fi blockbuster theme this summer, District 9 director Neill Blomkamp's Elysium - starring Matt Damon and Jodi Foster - barely pulled ahead of three other newcomers at the theaters this weekend.

Elysium secured the top spot with $30.4 million while the Jason Sudeikis and Jennifer Aniston comedy We're the Millers placed second with $26.5 million. The latest Pixar flick Planes debuted at third place with $22.5 million while the teenage action film Percy Jackson: Sea of Monsters took in $14.6 million in its first week, taking number four at the box office. Last week's number one film, 2 Guns, fell four positions to number five this week with its $11.1 million take.

1. Elysium, TriStar, $30,400,000 (avg. $9,257)
2. We're the Millers, Warner Bros., $26,555,000 (avg. $8,146)
3. Planes, Disney, $22,525,000 (avg. $6,085)
4. Percy Jackson: Sea of Monsters, Fox, $14,600,000 (avg. $4,817)
5. 2 Guns, Uni., $11,128,000 (avg. $3,675)
6. The Smurfs 2, Sony, $9,500,000 (avg. $2,457)
7. The Wolverine, Fox, $8,000,000 (avg. $2,790)
8. The Conjuring, Warner Bros., $6,700,000 (avg. $2,528)
9. Despicable Me 2, Universal, $5,748,000 (avg. $2,400)
10. Grown Ups 2, Sony, $3,700,000 (avg. $1,760)