Hamm's story is broken up and told in segments throughout the play. It serves essentially as part of the climax of Endgame, albeit somewhat inconclusively.
Hamm's story is gripping for how the narrative tone it is told in contrasts with the way the play the characters are in seems to be written or proceed. Whereas Endgame is somehow lurching, starting and stopping, rambling, unbearably impatient and sometimes incoherent, Hamm's story in some ways has a much more clear, liquid, fluid, descriptive narrative lens to it. In fact, in the way it uses run-of-the-mill literary techniques like describing the setting, facial expressions or an exchange of dialogue, in slightly bizarre ways, it almost seems like a parody of writing itself. Beckett's eerie, weird stories about people at their last gasp often doing or seeking something futile somehow seems to return again and again as central to his art. It could be taken to represent the inanity of existence, but it also seems to hint at mocking not only life but storytelling itself, inverting and negating the literary craft with stories that are idiotically written, anything from poorly to put-on and overwrought.
Extremely characteristic Beckettian features in the work, represented by many lines throughout the work, are bicycles, a seemingly imaginary son, pity, darkness, a shelter, and a story being told.
The play has postmodern features in that the characters recurrently hint that they are aware they are characters in a play.