How No Man's Sky Creates 18 Quintillion Planets With Just Math

No Man's Sky advertises 18 quintillion planets. That is not because someone modeled them by hand. It is because the game generates terrain, flora, and atmosphere from mathematical functions seeded by the planet's coordinates. The core idea is procedural generation, and the simplest building block is noise. Why raw randomness fails If you fill a height map with random numbers, you get chaos. Real terrain has smooth transitions: hills blend into valleys, coastlines curve gradually. The solution is