In second place, Lucy fell 58 percent to $18.3 million. That's a rough drop, though it's not horrible given the movie's mixed word-of-mouth and tough competition from Guardians. To date, Lucy has earned $79.5 million, and remains on track for over $110 million total.
James Brown biopic Get On Up opened to $13.6 million this weekend. That's a bit above Jersey Boys ($13.3 million), but is less than half of the opening of star Chadwick Boseman's last biopic (42, $27.5 million). It's also significantly lower than director Tate Taylor's last movie, The Help ($35.9 million in five days).
With good reviews and strong word-of-mouth ("A" CinemaScore), Get on Up should hold up well in the next month: a final total north of $50 million is likely.
Hercules plummeted 63 percent to $11 million this weekend. To date, the movie has earned $52.7 million, and is on pace to wrap up somewhere between $70 and $80 million.
Rounding out the Top Five, Dawn of the Planet of the Apes fell 48 percent to $8.7 million. The Apes sequel has now grossed $189.3 million.
A Most Wanted Man doubled its theater count to 726 and held on to the 10th spot with $3.24 million. Meanwhile, Boyhood expanded to 310 theaters and earned $2.4 million. With $7.44 million total, its already the third-highest-grossing movie ever from IFC Films behind My Big Fat Greek Wedding and Y Tu Mama Tambien. Next weekend, it's expected to expand to around 500 locations.
Coinciding with its domestic debut, Guardians of the Galaxy opened in 42 foreign territories where it earned $66.4 million. Major markets included Russia ($13 million), the U.K. ($10.8 million), Mexico ($6.5 million), Brazil ($5.4 million) and South Korea ($4.7 million). On average, it opened lower than Thor: The Dark World and Captain America: The Winter Soldier.
Guardians has many more markets left to open, including Australia (next weekend), France, Germany, Japan, Italy and China. A total north of $300 million seems likely, while $400 million is possible as well (depending mostly on how well it performs in China).
Dawn of the Planet of the Apes added $47.5 million this weekend, which brings its total to $258.2 million. It opened to a massive $14.1 million in France, which is the biggest debut of the year there so far. The movie still has China, Japan and Germany on the way, and a final total above $400 million seems very likely.
How to Train Your Dragon 2 earned $20 million from 36 markets; that includes a solid $3.1 million debut in Spain. The DreamWorks Animation sequel has now grossed $295 million overseas, which is more than its predecessor earned in its entire run. With China and Italy on the way this month, Dragon should ultimately soar north of $400 million.
Transformers: Age of Extinction joined the $1 billion club this weekend. Most of that has come outside of the U.S.; the fourth installment in the franchise has now earned $763.8 million overseas, which ranks 10th all-time. With Spain and Japan opening next weekend, it could wind up with over $1.1 billion total by the end of its run.
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This Weekend's Forecast:
• Forecast: 'Lucy' to Beat Up 'Hercules' This Weekend
This Weekend in Past Years:
• 2013 - '2 Guns' Takes Top Spot, 'Smurfs' Struggles
• 2012 - 'Dark Knight' Beats Up 'Recall' Redux
• 2011 - Hail the Conquering 'Apes'• 2010 - 'Other Guys' Arrest Audiences, 'Step Up' Gets Served, 'Inception' Lingers
• 2009 - 'G.I. Joe' Doesn't Roll Snake Eyes
• 2008 - 'Dark Knight' Soars Past $400 Million
• 2007 - 'Bourne Ultimatum' Accepted
• 2006 - 'Talladega Nights' Goes Fast to No. 1
• 2005 - 'Dukes' Charge the Top Spot, Emperors 'March' On
• Weekend Box Office Results
• All-Time Domestic