A term coined by anthropologist Francis Gillen, the Dreamtime (alternatively known as "The Mystic Age") is blanket term used to describe the Aboriginal belief in Land Downunder. What exactly the Dreamtime is depends on which region you ask about it in, but the common consensus is that the Dreamtime is an early era in the world where the Earth was an Eldritch Location populated by monsters, gods and powerful spirits that would father humanity and the tenets that make up the natural laws of the universe.
In fiction, it has been given the same treatment as voodoo and is looked upon as a source of magical power, with shamans acting like wizards casting spells and facing the likes of Yowies and Bunyips and Drop Bears, Oh My. Said shamans are often portrayed as the Ethnic Magician in a Fantasy Kitchen Sink, their presence followed by the distinct sound of didgeridoos.
- The Big Finish Doctor Who episode "Dreamtime", the Dreamtime was taught to the Aboriginal humans by the Euterpians, an advanced humanoid race that naturally encompassed the three dimensions of time, space, and transcendentalism. It is described as being Another Dimension where one must focus on maintaining their sense of self or else become deprived of their senses and be left in an And I Must Scream state.
- In the Marvel Universe, the Dreamtime is the collective unconsciousness of all sentient beings in the universe. From the Dreamtime, it is possible to access anywhere gods live by going to the fringe of a species' collective consciousness and through the Heart of the Dreamtime, and linking to the others, through the abstract region of pure sentience. It contains countless planetary objects, including Alchera, home of the Aboriginal gods, which cannot be comprehended through reason, as well as Nightmare's "Dream Dimension", which is linked to and shaped by humanity's collective unconscious and include Nightmare World (which Nightmare rule, and which was bordering the Astral Plane), the Skrull Dreamtime, and the infinite alien consciousnesses of all the races of the universe. The Realm of Madness both bordered Nightmare's realm and was beyond it and the Dream Dimension.
- After the Second Coming occurred in God Is Dead and all of the gods of antiquity began to wage war on Earth at humanity's expense, the various Aboriginal Gods managed to turn Australia as the only safe-zone in the world by allowing passage into the Dreamtime. The Dreamtime is portrayed as a scenic landscape filled with magical beings where none of the humans there age and they cannot be killed permanently, Albert describing the state of death there as them simply "thinking" that they are dead.
- The Guru by Sly 3: Honor Among Thieves is an Aboriginal koala adept in the practices of the Dreamtime and is Murray's spiritual teacher. With his staff and moonstone, the dreamtime gives him the power to camouflage himself, control people's minds and telekinesis.
- In TY the Tasmanian Tiger, the Dreaming/Dreamtime is an alternate universe inhabited by mystical beings known as the Bunyip, the title character's family sealed within the Dreaming by Boss Cass before the events of the first game, and in Ty the Tasmanian Tiger 3: Night of the Quinkan, Dreamtime becomes a warzone between the Bunyip and the Quinkan.