Domo 6-4

''"Hey, are you ready to go? 'Cause you know the way to go! Time to turn over a new leaf and give Planet Domo a try! It's population: growing. All it's missing is YOU!" -travel byline, 4th wave''

Domo 6-4 (pronounced six-four) is a planet in Sector 6-4 of the Galaxy. It is not affiliated with either the Galactic Federation or the Rebellion. The Federation regards it as a "Rogue Planet" and discourages its citizens from interacting with it in any way. Thus far, their attempts to ally, scout, or destroy it have all ended in failure.

Information?
From outside observation, Domo 6-4 appears to be a mostly wild world with only one city-level settlement visible. However, spatial distortion kicks in when instruments attempt to get a closer look, so outsiders can't know for sure.

In fact, the most that outsiders can know about the planet, and its seeming primary species, the Nuki, is as follows: First, they send out a wave of "invitations" every few years. Galactic Travel Agencies will suddenly offer getaway packages for sale, usually successfully selling millions of them before the authorities can stop the sales. In fact, every wave of getaway packages sells higher volume than the last. Second, once a vessel enters Domo 6-4's atmosphere, it and the people inside disappear. This happens even if the parties within have never bought the invitations. And it's not only vessels, but anything entering the planet, including missiles and probes.

''"If you receive a message from a loved one whose disappearance is connected to Planet Domo 6-4, do not respond. This is not your loved one. This message is a lure. Please report it to a GF Authority right away." -Official Galactic Federation warning regarding Domo 6-4''

People who've gone to the planet will occasionally send out messages inviting friends and loved ones to join them. These messages are actually real, despite the Federation's claims. There is no known way to reply to the messages.

Information
The true nature of the planet becomes simultaneously more known, and less known, once you are within its atmosphere. An illusion makes the shape of the planet look like a cylinder, making your surroundings look like they're always on the edge of a new horizon. Other than its one city, Animos, the only settlements are a seemingly endless expanse of identically-sized small towns & islands.

When people arrive to the planet, they're suddenly inside a terrestrial vehicle that's headed for one of these towns. Upon arrival, a Nuki representative will help them get established in the town, setting them up with a house & general direction for starting their new life.

The town or island someone moves to will be inhabited by a small number of a variety of species native to the planet, henceforth referred to as "townsfolk". The townsfolk will invariably be friendly neighbors to the new inhabitant. In fact, with the help of the Nuki representative, the new inhabitant can significantly tailor the town to their own desires, for a truly fitting and one-of-a-kind paradise.

History
Domo 6-4 resides in a very life-conducive spot in its solar system. Many different lifeforms gained sapience pretty much simultaneously, for a rich and varied world.

The modern state of the planet dates back to when a mysterious stranger arrived in the city of Animos. She claimed to have been a different species before somehow transforming into the form she was famously known by. She was the first of the Nuki species, gifting her with incredible illusory and transformative powers. Her descendants, generations later, would be the ones to use these powers to turn Domo 6-4 into what it is today. It is intended to be a paradise for any person in the universe.

Currently, Animos is the only existing city on the planet. The city folk tend to be just as friendly to outsiders as the townsfolk are. Oddly, every single town or island seems to be the same distance: a short drive, train ride, or flight away from each other, including Animos. It is thus, a particularly easy planet to get around. Albeit, not a very scenic one. If the planet does have anything like mountains, tundras, or deserts, they're hidden by the extensive illusion work.

Meta
So yeah, it's Animal Crossing but as a sci-fi planet. I also incorporated a bit of the anime BNA: Brand New Animal, as a sort of "origin" story, for fun.

The name "Domo 6-4" derives from AC's Japanese title: Dobutsu no Mori. The "6-4" comes from its debut game system, the Nintendo 64. The city of Animos is pretty directly named after the city from BNA: Anima City.