Avengers: Age of Ultron kicked off the first season of summer blockbusters with an estimated USD 187.7 million debut, ending Furious 7's four-week reign at the top.
The superhero movie also scored the second-highest box office debut of all time, reported Ace Showbiz.
The sequel to The Avengers beat the first movie with its opening day numbers, earning USD 84.5 million on its release on May 1 compared to the first movie's USD 80.8 million.
It was just behind the all-time best opening day of Harry Potter and the Deathly Hallows: Part II which earned USD 91.7 million in its first day back in 2011.
Avengers: Age of Ultron's opening day collection is also the biggest ever for a superhero film. It has grossed a total of USD 627 million worldwide.