In Imposter 3D: Online Horror, the action takes place in a spaceship, which is home to dozens of people. But one of the people is not ordinary, he looks like the other people, but at any moment he can become a terrifying imposter, who looks like a real person. This terrifying imposter can only be caught by other people and only by them! At any moment the player will be able to make a vote for the person who is not in the right, and all the players will get rid of the imposter. The imposter will try to do his best to catch you, but the vote can be used to escape from him. He can appear in many places, but in this game, it's in the vent. If he appears in your room, you need to flee from him, but you can't hide in any way, the monster will find you! Now you need to protect the babies, because this imposter is among us, and he can turn into an imposter and catch other people.