Explore
Chart systems, survey worlds, drop a mining robot on a seam, and read the report no one has written yet. Comets, belts, moons and rogue planets are all places, not scenery.
4X Strategy · RPG · Roguelike · Space Sim
JOURNEY TO THE STARS
You are the Captain of an expedition into a galaxy nobody has charted. Every star, every world, every first contact is generated for you alone. There is no walkthrough. There is only the map you fill in.
Wishlisting makes you eligible for the Steam Playtest.
// Discover your journey
A galaxy that has never been played before
Astro Realms is a new adventure inspired by classic spacefaring games from the golden age of PC gaming — a cockpit, star chart, and universe full of adventure awaiting — rebuilt with the graphics and the science of today. Step in, take the helm, and reach for the stars!
The helmsman’s chair
Fly the ship yourself, or hand the pilot the conn and run the empire. Every control is a real one: throttle, impulse, fold coils, survey scanner, mining robot, customs hails.
Worlds with a name
Worlds are generated from real astrophysics — stellar classes, habitable zones, atmospheres, ice lines — then it is your job to survey the galaxy world by world. Rename anything and everything.
New story each run
Colonies, federations, rival powers, alien worlds, pirates, contraband and first contact turn one galaxy into a campaign. When the run ends, a different seed starts a whole new adventure!
// Procedurally generated universe
Procedurally generated universe to explore
One number seeds everything. Give the generator some digits and it lays out a whole galaxy: spiral arms, a core, clusters, civilisations, life forms, and the quiet places between them. Give it another number and you have never been there before.
GALAXY PARAMETERS
12345678
- Star systems0
- Core radius4 260 ly
- Spiral arm length60 000 ly
- Spiral arms51
- Star clusters0
- Civilisations0
Everything is derived from this.
0stars per galaxy
0thousand light‑years wide
0civilisations to meet
0galaxy that is yours
// The four Xs, and then some
Explore. Expand. Exploit. Encounter.
Expand
Found colonies, raise commercial stations and government offices, and watch a settlement become an economy. What you build in a system is drawn on it, for anyone who comes looking.
Exploit
Mine deposits, harvest gas giants, run the trade lanes, and keep an eye on the weigh stations. Contraband is profitable right up until a patrol answers the alert.
Encounter
Twelve civilisations have their own histories, charters and tempers. Diplomacy, trade, aid and war all leave a mark on the record — and the record fills in as you play.
An RPG in the captain’s chair
You are a person, not a cursor. Name your captain, name your hull, carry a crew and a genome, take rare encounters as they come, and keep a ship’s log that reads like a journal. Milestones — first colony, first contact, a first rare find — are written onto your record the year they happen.
A roguelike you can live in for hours
New galaxy, new seed, new story. Builds are landscapes, not loadouts: a run is shaped by where you settle, who you befriend, and what you were brave enough to survey first.
// From the bridge
Screens, straight from the game
Every frame below is captured from a running build. No mockups, no art passes. Not all features are shown here, and the game is still under development. Games are meant to be experienced, and still images may not capture animation details, nuances and scope the way trying the experience does. Visit our steam page and wishlist the game to be updated on its progress and get a chance to join the Playtest.
// Real sky, generated sky
Built on real astronomy
Astro Realms takes the sky seriously. Stars are sorted by spectral class, worlds are placed by habitable zone and ice line, and a comet’s tail is drawn from its own coma profile. The images below are real — NASA and ESA observatory photography, from Hubble, Webb, Spitzer and ESO — a Galactic simulation based on real-world statistics and discoveries like trojan asteroids, the Oort cloud, comets and rogue planets.
True colour & false colour
Many kinds of telescope do not see the way you do. Infrared and ultraviolet light is invisible to the eye, so observatories map those wavelengths onto visible hues — false colour, chosen to reveal structure, not to decorate. Where an image is a true composite of visible light, we say so. Astro Realms uses the same honesty: a world’s colour on the chart is the surface it actually has, yet that underlying science is informing how the world has formed, what it's attributes are, and what points of interest it may reveal.
NEW!
A STARFARING 4X · PC / DESKTOP
SYSTEM REQUIREMENTS
OPERATING SYSTEM
Windows 10 / 11 · Linux · macOS
2D/3D accelerated browser build also planned
INPUT
Keyboard & mouse · gamepad
Full rebinding for every action
PACE
Minutes to a first survey
Hours to a galaxy
SAVE
Eight slots · autosave
Every run is renewable from its seed
“A cockpit, a star chart, and a universe too big to finish.”
★ Wishlist on SteamYour journey awaits
Every wishlist tells Steam there is a galaxy out there worth founding. Add Astro Realms to your wishlist and you become eligible for the Steam Playtest.
store.steampowered.com/app/1029800/