A self-running space economy SIM in Rust and Bevy
I built this with Claude cause I always wanted to tinker with a simulation economoy and I love space themes. A space-economy sim where nothing is scripted. A few hundred autonomous ships each run their own planner. Some chase the best trade route, take a delivery contract, refuel, retrofit at a shipyard, or dock so the crew can rest before morale tanks. Markets price everything off supply with shortage-urgency multipliers, factions tax and subsidize, populations migrate when they're unhappy, and stations that go broke get abandoned and rot. It started as an Elixir/Phoenix prototype, but…
A self-running space economy SIM in Rust and Bevy launched on July 21, 2026 with 110 votes, #358 of 24,623 launches that month and more than 95% of that year's launches.
In plain words
A space economy simulation built in Rust and Bevy where hundreds of autonomous ships operate independently without scripting. Each vessel manages its own goals—trading, refueling, repairs, and crew rest—while markets dynamically price goods based on supply, factions levy taxes and subsidies, populations migrate based on satisfaction, and abandoned stations decay. The engine uses a pure synchronous ECS architecture with the Bevy renderer directly embedded, eliminating data marshalling between sim and graphics. Originally prototyped in Elixir, it was rewritten to Rust for better Windows performance.
written from the facts on this page · September 2026
From the sources
Contribute to Kalcode/spaceprojectsim development by creating an account on GitHub.
Hundreds of autonomous ships trade, mine, haul cargo, take out contracts, run out of fuel, and occasionally go bankrupt across a living solar economy — markets find their own prices, factions tax and subsidize, populations migrate when they're unhappy, and abandoned stations rot. It all runs in one native binary with no runtimefrom github.com
In the maker’s words, at launch
I built this with Claude cause I always wanted to tinker with a simulation economoy and I love space themes. A space-economy sim where nothing is scripted. A few hundred autonomous ships each run their own planner. Some chase the best trade route, take a delivery contract, refuel, retrofit at a shipyard, or dock so…
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