Inhumanity is a first-person tower defense game. The player starts at the “Room” surrounding with game object. In the “Room” player can walk around and find out some of the locked-up door or vault you can interact with, one of the features in the “Room” is you can simulate different history places.
Once the player get into the simulation, the player will not allowed to walk around, and some of the “Test subject” like “Two Head Dogs”, would start doing something would make the “Machine” gone bad so you must stop them by your “Weapon”.

After you finish the simulation, you will get different kind of “Object”, password or some background information of that history would appear in the “room”, and you will get more “skill” of your “weapon”.

The “Two Head Dogs” is a reference from world war one experiment ran by German, they start an experiment which they try to infuse a dog head into a dog. This project is aimed to tell people about the horrible experiment they made warning people not to do any brutal experiment.