The Longest Night: House of Killer is an action-adventure game with horror elements and a first-person view for mobile platforms. The main character wakes up in a small dark room. The only thing he remembers is how someone inserted a syringe into the back of his neck. Despite the pain, he tries to find a way out, but discovers many warning signs that are clearly related to the murders. And at this moment the hero realizes that he is in great danger. It is up to you to save the life of the protagonist by any means in the building where the maniac is roaming.