One easter egg in Duke Nukem Forever has Duke finding a familiar set of Spartan armor.
According to Kotaku: ”Duke calls out anyone who wears “green armor”, saying such a person is a part of the female anatomy.” It’s even funnier when you read the God Mode strip in which the theory Duke Nukem was Master Chief all along is advanced.
On a side note, this could be the only time you ever see anything related to Halo on a PlayStation console.
