Orbit Golf is 18 holes of 3D mini-golf in space. A green alien golfer putts along walled neon courses that bend, zigzag, and spiral while real Newtonian gravity from planets, moons, and black holes curves every shot. The ball banks off walls, rolls to a stop, and you play it where it lies, with flying saucers, satellites, and a cheering alien crowd looking on. A solver proves every hole can be finished. Works with touch, mouse, and keyboard. Built with React, TypeScript, and Three.js.