Players take on the role of protagonist Lady Love Dies, an investigator who is brought out of exile and tasked with uncovering the culprit(s) of a mass murder on Paradise Island.

The game's open world, nonlinear design allows players to freely explore the island and interact with other characters over the course of their investigation.

[4] Paradise Killer takes place in a pocket universe in which a group of immortal alien beings, the Syndicate, are trying to create a "perfect society" to reawaken their ancient gods.

On the night of the regular sacrifice, the entire Syndicate Council is found murdered and the transfer to Island 25 is put on hold.

Kaizen mentions that the game was designed to feel more real through how artifacts are scattered around island, creating a sense of mystery.

[7][8][9] The game received positive reviews from critics, who praised the soundtrack and the open-ended nature of the investigation mechanics.