Gameplay in Hatoful Boyfriend is similar to most other visual novels for the PC, with the controls limited to the mouse and the only interactions being clicking to forward the game's narrative or to choose between multiple plot choices.

The keyboard can also be used instead of the mouse, with the 'enter' key serving the same purpose as clicking.

The release of a counter-virus, cultivated to destroy the virus' avian carriers in a desperate attempt to stop the spread of the disease, ends up backfiring as birds who resisted the counter-virus instead developed human-level intelligence.

Society has adjusted to the avian conquest, though with minor bird-related cultural changes—for example, while some holidays such as Christmas and Tanabata are celebrated much as they are in the present day, a major event in the game is Legumentine's Day, an amalgamation of the traditions of Valentine's Day and Setsubun.

Her eight potential love interests in the original version of the game, who together form the rest of the main cast, are Ryouta Kawara, a rock dove and the protagonist's sickly but hardworking childhood friend; While most of the characters are normally represented in-game with pictures of birds, if the player toggles on the ICPSS (Intra-Cerebral Playback Synchro System) feature at the start of the game, or NS3 Although the ICPSS feature also lists voice credits for each of the main love interests in the original version of the game, the game itself is unvoiced; however most of the voice actors who were credited later signed on to actually voice their respective characters in the drama CDs based on the series.

After a hectic and surreal freshman year of attendance at 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.Hatoful Boyfriend is set in an alternate version of Earth in which sapient, anthropomorphic 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, anthropomorphic birds, and its main story follows the player character and protagonist—the only human attending St.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.