User:Joe MM24/sandbox

= Gigastructures = Gigastructures are a type of theoretical megastructure on such scale that it can no longer be accurately described as just a megastructure. Examples of a Gigastructure include Stellar Systemcraft, a ship class composed of an entire solar system bolted together, theoretical Birch Worlds built around supermassive black holes capable of holding an estimated 10,000,000,000,000,000,000,000,000,000,000 people comfortably.

For regular megastructures, click here

Gigastructures are commonly associated with and popularized by the popular video game Stellaris (2016), via the Gigastructural Engineering & More mod available for the game on the Steam Workshop. The mod is one of the most subscribed mods for Stellaris on the Steam Workshop.

Birch World
Located around the supermassive black hole found in the centers of galaxies, these gigastructures are the most massive one commonly found. It can house approximately 10,000,000,000,000,000,000,000,000,000,000 (10 nonillion) Humans at a city-scale density, and trumps all other habitats in terms of sheer size. The construction of such an object would require an incredibly advanced civilization, and would likely be the epitome of work by a Type-III Kardashev civilization.

In Gigastructural Engineering & More, it generates as the capital of the Aeternum, a super powerful empire, and can also be built by the player for an immense amount of resources.

Alderson Disk
The Alderson disk is, essentially, a giant frisbee placed around a star that occupies the space of an entire solar system. It is a supermassive habitat rivaled only by the Birch World in magnitude. It is named after Dan Alderson, who initially proposed the concept of a stellar disc. In his, and many other interpretations of such a gigastructure, there is only a slim band of habitable land near the center,

Stellar Systemcraft
Literally an entire solar system bolted and welded together, it is seen as the height of military power possible to construct, the Stellar Systemcraft is composed of several entire planets and moons, with a star in the center to power the craft. It has several shipyards on the craft, able to maintain itself and support fleets, but is extremely slow, taking a massive amount of time to cross relatively short distances.

sources until it gets organized

https://gigastructural-engineering-and-more.fandom.com/wiki/List_of_gigastructures

https://www.reddit.com/r/Stellaris/comments/fnl2mq/birch_world_population_mathematics_gigastructural/

https://steamcommunity.com/sharedfiles/filedetails/?id=1121692237