The Materium, also called realspace, is the four-dimensional region of space-time where corporeal beings live; it is the physical plane of existence defined by the four basic forms of physical energy and the basic elements of matter, as opposed to the Immaterium, more often called the Warp or Warpspace, the hyperdimensional, non-Euclidean, psychically-reactive region of space-time that underlies the physical universe. The Materium abides by all the laws of physics and the natural world that we know today. The Warp, on the other hand, is another dimension where daemons and other Warp entities exist, created and maintained by the collective psychic unconsciouness of the sentient beings of the material universe, particularly Mankind since humanity is the galaxy's most populous and dominant in