Deep underground there is a secret lab. It has been abandoned for years, but long ago, some mysterious experiments were run down here. Who knows what it was – perhaps, the invention of a new medicine? Or, on the contrary, a biological weapon? You decide to find that out and descend below the surface of earth to explore every corner of this intriguing laboratory. What are you going to find here? And what kind of dangers are waiting for you in the dimly lit halls? Let’s see!