July 21, 2026
Space nerds enter economic orbit
Show HN: A self-running space economy SIM in Rust and Bevy
Coders are losing it over this self-playing space world and joking they all had the same idea
TLDR: A developer released a self-running space trading world where ships and stations manage themselves, and people are obsessed. The comments turned into a mix of AI-fueled future hype, copycat panic, and jokes that every programmer apparently has the same secret space-sim dream.
A solo developer dropped a self-running space economy where hundreds of little ships hustle around buying, selling, mining, hauling, and sometimes spectacularly running out of money — and the crowd instantly treated it like catnip. The big flex is that this universe basically plays itself: no main character, no epic quest, just a living sci-fi sandbox you watch like an ant farm in orbit. That alone was enough to send commenters into a familiar spiral of envy, admiration, and “wait, I was going to build that.”
The strongest reaction? A mix of “this is the future” and “oh no, now there will be so many of these.” One commenter flat-out said projects like this feel newly possible because of AI coding help, calling it an early sign of what’s coming next in software. That’s the hot take hanging over the whole thread: is this a cool one-off, or the start of a flood of wildly ambitious side projects? Meanwhile, another commenter immediately pitched turning the simulation into a public spectacle with online viewers and an in-world AI newspaper reporting the drama — which, honestly, feels extremely on-brand for a universe full of bankrupt stations and unhappy space citizens.
And then came the relatable chaos. One dev joked they were throwing away their own spec doc, basically admitting this post had triggered the classic programmer crisis: “Are we all secretly making the same space game?” Others compared it to SpaceTraders and X4 Foundations, proving that if you show developers an economy sim in space, they will instantly form a support group around it.
Key Points
- •The Space Project is a self-running, agent-driven space economy simulator built in Rust with a native Bevy 3D client.
- •Its simulation includes autonomous ships, facilities, factions, populations, dynamic markets, and six contract types with no fixed commodity prices.
- •The project was rewritten from an Elixir/Phoenix prototype to Rust after BEAM scheduler issues on Windows gaming PCs.
- •The current scale is about 485 live agents, with p50 tick times of roughly 10–20 ms within a 125 ms budget, and the architecture is intended to scale toward 100k+ entities.
- •The author is releasing the project under the MIT license and explicitly invites others to fork, adapt, or reuse the engine.