Kathleen Lavey

Lansing State Journal

The long-awaited "Batman v. Superman" arrives March 25.

And so does a new mobile app highlighting a dozen sites in Detroit where the potential blockbuster featuring Ben Affleck as Batman and Henry Cavill as Superman was filmed.

The app, commissioned by the Michigan Film Office, highlights sites in a walkable area of Detroit where the potential blockbuster, rumored to cost as much as $400 million to make, was filmed.

Michigan State University's Eli and Edythe Broad Art Museum also was a film site, bringing crews to East Lansing for three days in October 2014 and employing an army of local extras.

"We started with 12 locations and we'll be building it out to be more inclusive of all of the locations around the state," said Jenell Leonard, commissioner of the Michigan Film & Digital Media Office.

She said that is likely to include additional Detroit sites as well as the Broad Museum and a site in Metamora.

It's hoped the free app will help draw film fans as tourists. Leonard said one in five people surveyed have said they would travel for a film or TV series that inspires them.

"We really feel confident about the potential of this app," she said.

The app, developed by Grand Rapids-based Mutually Human, includes sites such as Belle Isle, the Michigan Central Station and the Masonic Temple, as well as film footage, photos and character information provided by the film's distributor, Warner Bros.

The film caused quite a buzz in East Lansing as stargazers lobbied for a glimpse of Affleck, Cavill or other stars including Jesse Eisenberg, Holly Hunter and Amy Adams.

Hundreds applied to be extras for the party scene filmed at the Broad, and many are eager to see if they made the finished film or got cut. Social media were abuzz with star sightings: Ingham County Register of Deeds Curtis Hertel Jr. spotted Affleck at a Biggby Coffee, and Affleck worked out at the Duffy Daugherty Football Building and gave the Spartan football team a pep talk.

Learn more about the app at batmanvsupermantour.com; you'll be able to download it starting Friday.