"What in Hell is Bad?" is a female-oriented adult mobile game exclusively published by Neversoft. The game includes adult content, nudity, and sexual themes, but does not contain clear scenes of sexual acts. The game has a story to tell about a war between angels and devils that has gone on for a long time, since the days of Solomon, and the player is right in the middle of it. The game has garnered significant attention from female players. The game was created by the Female-focused Korean game studio Prettybusy and will be released in collaboration with EROLABS. The EROLABS version will have more exclusive nude CGs that cannot be shown on regular platforms.