Box office smash: Avengers: Age Of Ultron demolished the competition to remain at the top of the U.S. box office for a second weekend running

Avengers: Age Of Ultron reeled in a whopping $77.2 million in its

second weekend bringing its U.S. box office total to a shade under $313 million.

That gives the superheroes film the second biggest second weekend take in movie history, beating out Avatar's $75.6 million, and also makes it the second fastest film to pass the $300 million mark domestically.

It's still lagging behind the behemoth that was 2012's The Avengers that had earned $373 million by the same point, taking in $101 million on its second weekend

.