Create: Orrery

A planet is defined by a PlanetData entry in a datapack, which sets values such as gravity, sky colour and fall-damage scaling. Because the framework is data-driven, new worlds can be added without changing code. The planets build on the rocket, survival and telescope mechanics of Northstar, and the mod includes fixes for sky rendering bugs in the telescope tracking system.

Surface generation is curated for each planet. Terrain is built to feel alien, with ultra-thin black skies, freezing nitrogen ice sheets and water-ice mountains, while overworld structures such as villages and igloos can still appear. Custom ore variants and tool tiers are mapped to the harsh environments, and mod compatibility resources such as Applied Energistics 2 meteorites are kept where they fit.

Create: Northstar - Redux is required, and Applied Energistics 2 is optional for its meteorite resources. The mod runs on NeoForge for Minecraft 1.21.1 only, on a client and a server, and is released under the MIT License as open source. Builds are in the alpha channel, so the stats of each planet and its generation rules can shift from one release to the next.