They’re playing hardball!

Mayor Eric Adams and Mets billionaire owner Steve Cohen huddled with a Queens lawmaker to hash out differences about the fate of a project to build a soccer stadium and housing complex in Willets Points near Citi Field — while Cohen eyes a separate bid for a casino next to the ballpark, The Post has learned.

The talks via conference call centered on a dispute that New Yorkers are familiar with: parking — in this case for the soccer stadium, City Hall and other sources confirmed.

But sources familiar with the discussions also said the two projects are intertwined.