Mass Expansion
Land on a generated world. Build an industry, raise a city, and take a fleet out into a galaxy that was here before you.
Play in your browser See how it plays
No download. No account. It runs in the tab.
Planetside
The ground is the game
Every planet is a cylinder that wraps east to west, with mountains and liquid you cannot cross and cover you can shoot over. You drop in as a commander, on foot, with a gun in each hand — and everything you build stands where you put it.
Drones mine, haul and repair. Barracks garrison squads. A destroyed enemy hive opens a sublevel underneath it that you clear on foot.
Industry
Belts, silos, and a city that grows
Minerals move on conveyor networks into silos, through processors and fabricators. Then you paint a district, put a depot in it, and feed it — and the district levels, multiplying every production building standing inside it.
Districts that touch become one city with one warehouse. Buildings face their own streets. It is a supply chain you can walk through.
The Universe
Generated, addressed, and shared
Systems have one to three stars, planets, moons, belts and hidden sites you only find by scanning. Nothing is stored — every world is derived from its address, so the galaxy is the same galaxy for everyone who visits it.
Your commander gets a home planet that is his alone, with a seat reserved on it. Leaving the system costs energy and reaction mass you had to build the industry to make.
Fleets
Ships are modules, not statlines
Hulls come out of your shipyard bare; what a ship does is the modules you fit to it. Battles resolve deterministically from the fleets, a seed and the orders you gave — so a fight can be replayed exactly, by anyone.
Beat a pirate and you might take the prize instead of the kill: board it, walk its decks, and fly it home.
Play Free
It runs in the tab
There is no server to connect to. The game server is compiled into a worker that runs inside your own browser, so the demo starts the moment the page loads — same engine, same worlds, same code.