The 71-year-old filmmaker may have already released The Post this year, but his next movie is only a month away.

Ready Player One, based on the best-selling sci-fi novel, crosses between the real world and a virtual reality called the Oasis.

With the complicated process of shooting both, Spielberg has revealed it was one of the difficult films he’s ever made, not to mention the most sleep-depriving.

Speaking with EMPIRE, in this month’s special Steven Spielberg takeover issue, the director spoke of his struggles.