The galaxy map generator charts an entire galaxy in one click. You get a glowing spiral seen from above, laid over a polar survey grid, with four to seven interstellar powers named where they hold territory, a catalogue designation, and a scale bar in light-years. It looks like the chart on the wall of a starship's briefing room, and it's built for the moment a space campaign needs to answer the question every player eventually asks: where are we, and who owns the rest of it?
How the galaxy is built
Real spiral galaxies wind their arms along logarithmic spirals, and so does this one. Each roll picks two, three, or four arms, a twist that sets how tightly they wrap, and a direction of rotation. About a third of rolls get a central bar, a bright spine through the core that the arms trail from, the way they do in our own Milky Way. The arms are then filled with stars: most of the light sits along the spiral with a natural scatter, a thinner field fills the dark lanes between them, and a dense bulge crowds the centre. The result reads as structure rather than wallpaper. You can see where the populated lanes run and where the empty gulfs lie, and that's where a campaign's politics come from.
The survey grid sits underneath: rings at each quarter of the galaxy's radius and a spoke every thirty degrees. It gives you a coordinate language for free. "Third ring, spoke seven" is a perfectly good address for a lost colony, and players pick it up immediately.
Powers where the stars are
Each map places four to seven powers, always on an arm and never crowded on top of each other, with names drawn from the vocabulary of space opera: a Hegemony here, a Compact there, the Ninth Directorate, the Tribunal of Zephara. The Galactic Core is marked and left unclaimed. Every power sits where the stars are dense, so a faction on the outer tip of an arm really is out on the frontier, and two powers on the same arm really do share a border.
That geography does the setting work for you. Read the map and the conflicts suggest themselves: the power closest to the core controls the traffic, the one on the lonely arm wants independence, and the gap between two arms is exactly where smugglers would run.
Using it at the table
The galaxy map is the top layer of a space campaign, the one you show in session zero. It isn't a jump-route chart or a tactical display, and it doesn't pretend to be. Use it to fix the big picture: who the great powers are, which ones border each other, and how far from the core the party's home sector sits. Then zoom in with your own system's sector maps, or with nothing at all.
It's system-neutral. Traveller, Stars Without Number, Starfinder, Mothership, Coriolis, or a homebrew all fit, because the map names powers and places, not rules. The caption under each roll is written as a note from whoever printed the chart, such as a border in dispute or a surveyor who never left the core, so you can hand it over in-fiction as a chart that may not be telling the whole truth.
Free SVG and PNG downloads
Both formats are free for your games, streams, and campaign notes. The PNG is a 1920-pixel render that looks right on a VTT, in a Discord channel, or on a second screen at the table. The SVG is the original vector file: open it in Inkscape, Affinity, or Figma to rename a power, move a border, mark the party's route, or add a capital world. The whole map is drawn by our own code, so there's no attribution to carry and no asset licence to read.
What it won't do
It draws whole galaxies, not star systems or sectors. There are no hex grids, no individual planets, and no jump distances you could plot a trade route with. The scale bar gives a sense of size, between roughly eighty and a hundred and fifty thousand light-years across, not a navigational tool. If you need a solar system, roll the galaxy for context and draw the system yourself.
Name the worlds, crew the ships
A galaxy needs people in it, and the text generators next door supply them. The planet name generator names the capital worlds the map leaves implied, the alien race name generator turns any power on the chart into a species with a history, the spaceship name generator christens the ship the party crews, and the robot name generator handles the crew member who never sleeps. For a ground-level map once the party lands somewhere old, the fantasy map generator draws a whole region in a single roll.