The Marvel superhero pic tumbled 66 percent in its sophomore outing domestically, compared to a 53 percent drop for DC's 'Superman.'

First Steps has reached a pivotal point in its theatrical run as second-weekend numbers confirm a significant drop after its $117.6 million debut. Early estimates show a decline of more than 60%. The film now faces growing competition from new releases.

Elsewhere at the box office, “Superman” descended to fourth place with $13 million in its fourth weekend of release. The Warner Bros. and DC Studios adaptation has generated $316 million domestically and more than $502.7 million globally to date.