Humans are a sentient species of bipedal mammal possessed of dextrous limbs and highly developed brains. As the dominant species on planet Earth, they are the primary species featured in Trace/ALTER and the species the majority of player characters will belong to.
Besides their unique sentience and technological prowess, humanity possesses the unique ability to tap into the power of TRACE, a potent magical force which permeates the universe, but in turn this has made them the prime target for paranomalous horrors who seem to hunger exclusively for humanity.
By default, player characters are assumed to be humans - to play as another species, the player must purchase/roll the associated background trait for that species such as Replicant (Trait) for Replicants or Brass Calling for Children of the Brass Garden.
Playing as an ALTER or ALTERED can be achieved with a background trait but requires the player to befall certain in-game circumstances prior.
Species not mechanically implemented in the game are not permitted for play. Certain allowance will be made for some features which can be explained reasonably via things such as cosmetic cyberware, but extreme cases such as wishing to play as a Centaur will not be permitted.