A psychiatric patient beat a man to death after a Dominos game at a Brooklyn hospital, law enforcement sources said.

Suspect Spence Andrews, 20, was playing the game with, Conrad Delimar, 47, in a room at the Interfaith Hospital in Bedford-Stuyvesant, sources said.

After the game, Andrews allegedly attacked him in an eighth-floor shower, sources added.

Delimar suffered blunt force trauma to the chest and head and died at the hospital, authorities said.

Andrews was taken into police custody and moved to Kings County Hospital, cops said.

He has been charged with second-degree murder.