Roll Authority

Høm is dying, and everyone on it has to leave. In Roll Authority you are the agency responsible for getting them out – one launch at a time.

Rockets are assembled part by part: tanks, engines, decouplers and cargo modules stacked and mounted in symmetry, with staging arranged by hand. They fly on real orbital mechanics. Apoapsis and periapsis, transfer windows, time warp and landings on other worlds all follow the physics, not a script.

In the free demo

• Build rockets part by part, with stacking, radial symmetry and drag-and-drop staging
• Fly them on real Keplerian orbits, with time warp and a map view that shows live apoapsis and periapsis
• Launch from Høm, make orbit, and set down on its moon, Luna
• Run it all from the Space Center: the Vehicle Assembly Building, Tracking Station, R&D, Mission Control (CAPCOM) and the launch pad

Proof of concept

This demo is the proof of concept: the rockets, the physics and the orbits are real and working. The finished game is cut from construction paper – planets, ships, modules and the interface – like a hand-made diorama of an exodus.

Where it's going

A rocket is only the start. Lifting mass off Høm is the hardest thing in the game, so the real work is the supply chain: survey worlds from orbit, mine and refine what you find, carry it in cargo holds that weigh out or cube out, and build the outposts, refineries and depots that turn every launch into fuel for the next. Every structure costs its own mass in metal, and every kilogram has to come from somewhere.

And the crisis does not stay on Høm. What killed the homeworld travels with the evacuees, so every world settled becomes the next to empty – until humanity builds a ship that can leave the system for good.

The supply chain opens up in early access on Steam. You can back early access now on our website, and your Steam key arrives as soon as the store page goes live.

Who's building this

I'm a full-time student in computer science and aerospace engineering. On March 23, 2026, I almost died from a massive aortic dissection. I've been running through life like my ass is on fire ever since, and Roll Authority is my dream project.

Made with AI

Roll Authority is made with generative AI. One developer and AI tools took it from the first line of code to this demo in five weeks. That's how this game exists. If that's a dealbreaker, go play something else.

Fly with us

• Discord: devlogs, bug reports and the flight board
• Roadmap: what's shipped, what's being built, what's next
• Press kit

Windows only. This demo is five weeks old, counting from the first line of code. It's early, and your bug reports decide what gets fixed first.