What Is Portal Fantasy? From Narnia to Stargate

Adil Bhatti · Updated 2 October 2026

The definition, and what it rules out

Three things make a portal story. The characters start in a recognisable version of our world. Something carries them across to a different one. And the second world has its own rules, which the characters do not know and must learn under pressure.

That last part is what separates portal fantasy from ordinary fantasy. In Lord of the Rings, everyone is already from Middle earth. In Narnia, the Pevensies are from wartime England and have to work out what a faun is. The reader learns the world alongside the outsider, which is why the genre is so good at first contact with a strange place: the hero's confusion is the reader's guide.

It rules out stories set entirely in a secondary world, and it rules out stories where the strange thing comes to us. An alien landing in Ohio is invasion, not portal. The traffic has to go the other way.

The classics, and what each added

• Alice's Adventures in Wonderland, 1865. The accidental crossing, and a world whose rules are hostile to sense.
• The Wonderful Wizard of Oz, 1900. The portal as weather, and the drive to get home as the plot.
• The Chronicles of Narnia, 1950 onward. The wardrobe. Siblings crossing together, a world under a tyrant, and the outsiders as the ones who can end the tyranny.
• A Wrinkle in Time, 1962. The science fiction turn. The crossing is a tesseract, not magic, and the other world is a planet.
• Stargate, 1994. The portal as ancient technology, dormant until activated, opening onto an alien world with its own oppressor. The film became a franchise on the strength of the device alone.

Later Japanese isekai took the same shape for anime and manga, which is why the genre is now bigger than at any point since Narnia.

Where portal fantasy meets science fiction

Once the door is a machine instead of magic, the genre changes character. Questions that fantasy can wave away become plot: who built the device, why it was dormant, what activating it costs, and whether it can be used again. A wardrobe does not need an inventor. A stargate does.

Omar & Ali: The Key to Orulenthia is built on that branch. Two brothers from New Jersey find a triangular device in a Tangier antiques shop. It is alien technology, dormant for aeons. They activate it by accident at home, a portal opens, and they arrive on Orulenthia, a planet of megacities holding billions under a red giant sun, ruled by Lord Thaarn, a tyrant who holds it by fear. The rebellion they land in the middle of, the hovering telepathic vehicles, the giant gliders, none of it runs on magic. It runs on a world that was already there before the door opened.

That is the Stargate lineage rather than the Narnia one, with one difference: the people who find the device are not a government programme. They are two teenagers on holiday.

Questions and answers

Omar & Ali: The Key to Orulenthia

Two brothers fall through a portal into a Star Wars scale war on a planet ruled by fear, with Star Trek friendships and Dune deserts. 243 pages. Paperback, hardcover, and Kindle.

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