Hi HN! I'm working on an open-world multiplayer space sim with submarine-warfare-inspired combat. Crew a ship, haul cargo, run heists, hunt your foes with passive and active sensors. Browser-based, free, no install.
Some of its features:
- Submarine-style passive sensors. Contacts start as a bearing line (direction, no distance), resolve into an uncertainty circle, then into a full track. You triangulate over time by moving.
- Silent running. Cut your emissions and witnesses can't ID you.
- Newtonian flight. No drag, no auto-brake. Flip 180° and burn to stop.
- Boarding combat. Dock with another ship and fight through it room by room.
- The server is a single Rust module compiled to WASM, running inside SpacetimeDB.
- Clients subscribe to rows in the schema and get live deltas over websocket; writes go through reducers (transactional Rust functions). No REST, no custom netcode, no client-side authority.
- Client is Svelte 5 + plain HTML5 canvas 2D. No game engine, no WebGL.
Very early, plenty of rough edges. Would love to hear what breaks for you:
It looks interesting but I'm on my phone and it's definitely not playable on mobile. All I can see are the help dialogs and some chat.
It should work on mobile. Are you able to close the chat so you can see better?