The save button can be employed at any point during the game, which also features several pages of save slots, allowing gameplay to be easily picked up from prior to a choice the player made.
An arrow button in the upper right corner also allows the player to skip dialogue and interactions they have already experienced.
Choosing to live a normal life will result in a normal playthrough, while choosing to fulfill the promise locks the player into the true route or scenario Bad Boys Love, or BBL (also known as Hurtful Boyfriend), which explores the full extent of the underlying plot alluded to by the documents and various points of foreshadowing in the dating simulation portion of the game.
If the player chooses to fulfill the promise, aside from several dream sequences, gameplay at first appears to continue normally until the in-game date is 2 September.
The in-game date is shown in the top left, and the arrow button in the top right allows the player to skip dialogue.
Hatoful Boyfriend is an interactive text-based visual novel that follows a branching plot line, with the player's decisions determining which of the game's multiple endings they receive.
Hatoful Boyfriend is set in an alternate version of Earth in which sapient birds have seemingly taken the place of humans in society for reasons that are hinted at, but not fully explained in the dating simulation portion of the game.
In Bad Boys Love, it is revealed that Hatoful is set in a post-apocalyptic, dystopian future—in which a pandemic of a deadly, mutated strain of the H5N1 virus, or bird flu, nearly wipes out mankind in the year 2068.The title is a pun on the wasei-eigo word hātofuru, as the game features pigeons and other birds as major characters.The game is set in a version of Earth populated by sapient birds, and its main story follows the player character and protagonist—the only human attending St.These documents can be viewed at any time in the game's archive feature, which is accessed from the title screen.After obtaining the four specific endings required to trigger it, the player is given a new prompt to either "fulfill the promise" or live "a normal life" upon starting a new game.A free demo version of Hatoful made with the Famous Writer engine was released later that year, followed by a full commercial version released on 30 October 2011 at COMITIA 98, and an English version released in February 2012.