Following the scene where Diane Spoiler:is crushed by Lin, who found out she was a dirty cop, the player is given a dialogue prompt that can lead to a bad ending with two possible death scenes. Originally, it was not possible to trigger the bad ending after finishing the scene, but on February 26, 2024, a series of updates was released (versions 7.0.4 to 7.0.7), each one claiming to have made it possible to obtain the bad ending by talking to Lin again after the scene occurs. Exactly which one made it possible is unknown, as each of the version updates have the exact same description regarding the addition.

Shortly after release, The Police Mystery became somewhat viral due to its material, which many considered to be fetish content. While the teaser trailer had already gained a substantial amount of views, it spread even further after the site 80 LEVEL posted a review of the game, which it described as "a bizarre game where you play as a bug-sized policeman tasked to escape from giant female police officers." This led to Twitter users commenting on the game, accusing it of being fetish material.