Paradise Killer is a murder mystery adventure game developed by Kaizen Game Works. Set in an alternate future history, the game takes place on an island called Paradise that regenerates every few millennia. The island is home to a rogue human civilization that hopes to resurrect dead alien gods. However, the psychic power released by the alien worshippers also attracts undesired interest from demons, who eventually corrupt the island.

The game puts you in the shoes of Lady Love Dies, an "investigation freak" who is summoned from exile to find the culprit behind the murder of the Council on the eve of Paradise's rebirth. Your task is to find the killer and build an airtight case against them, taking it to trial and arguing your interpretation of the evidence. But with many possible murderers and ways to build a case, even a successful conviction may not solve the mystery.

As you explore the island, you will examine bizarre relics to learn more about its surreal history. You will collect evidence, record testimony, and interpret the facts to form your own truth. With hieroglyph puzzles and concealed evidence, Paradise Killer offers a unique and intriguing gameplay experience that challenges you to choose between the evidence, the greater good, and your own beliefs.