Most terrifying experiment! Hajis is a survival horror co-op game 2-4 players. You have to maintain your mentality in place where talking, footsteps or any sounds you make can cause your death. Story 139 Society, is a secret unknown group who believe in the existence of the parallel universe, a tiny ray between life and death. A mission offered by the group to discover an abandoned building. They believe that a spirit crossed the ray between life and death trapped in this building. What is waiting for you there? and how did it happen? What I’m pretty sure about is you can’t accept the mission alone, you have to bring who you believe you can put your trust on to help. You and your friend’s mission is to finish each floor’s riddles objective to reach the last floor and purge the spirit!