Criminal Case: Save the World! is a hidden object, adventure game. It is based on accounts of the FBI Criminal Investigation Division, and the processes they go through to solve a series of murders. The main characters are the FBI agents who work in the case. They try to solve the crimes by finding clues, and talking to the suspects and witnesses.

Your main task as the player is to help the FBI agents solve the case. The player needs to find the clues, and analyze the evidence to find out who the suspects are and what they did. The player needs to find the killer, and bring them to justice. The player needs to find the hidden objects, and solve the case.