It's reported the couple stopped by the local Detroit Kid City with their two-year-old and asked to be let in.
The indoor mini-Detroit play city happens to be closed on weekends for children's birthday parties, but the couple were let in where a Superman-themed party was happening.
The kids got to meet the new Batman and are said to have been super excited.
"I spoke with Ben for 10 or 15 minutes and he was very pleased with the facility. He was very interested in getting a Detroit Kid City out in L.A.,” Garrett Dixon of Detroit Kid City told the Detroit Free Press. “He said they had a blast and will definitely be in contact with us.”
Ben Affleck has yet to be officially seen on the set of Batman Vs. Superman. So far, only one official image of Ben Affleck as Batman has hit the net.
"Batman v Superman: Dawn of Justice" has a newly announced May 6, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter and Tao Okamoto in new character roles for the film. Justice League is to follow directed by Zack Snyder as well.
For more news on the "Man of Steel" and related movies head on over to the Cosmic Book News Superman movie hub.