[https://youtu.be/XNXLLl\_4f3g?si=PG4HD4PMBDWM2uQV](https://youtu.be/XNXLLl_4f3g?si=PG4HD4PMBDWM2uQV)

Altum: SOL DOMINION Orbital 4X  
A strategy game I've been building. Real ephemeris-driven solar system  every planet and moon runs on actual Kepler orbital mechanics, not painted backdrops. You play one of six powers and more galaxies added soon! from any worlds, fight a slow war against a rival faction, and decide what to do about the fringe nations watching the whole thing happen.  
What you actually do in a campaign:  
— Colonize worlds, mine metals, harvest volatiles, build power grids and shipyards  
— Research technology across six painted branches propulsion, weapons, defense, industry, naval, science  
— Design fleets, send them on multi-month transit arcs with real intercept solutions, fight battles when they land  
— Run a Chancery court recruit characters, marry into rival houses, arrange accidents for ones who become inconvenient  
— Negotiate treaties, trade pacts, defense alliances with five other powers, or break them  
— Declare war, lock the system into a defined exhaustion economy where everyone pays for the fighting  
— Scout enemy worlds before you commit what you haven't seen, you don't know  
— Build the Helios Lance if you can stomach the bill, then aim the sun at a world of your choosing  
— Answer the Persephone signal, or don't  
Some of what's in it:  
— 123 technologies, 15 named commanders with painted portraits and voiced moments  
— A character system spanning the Chancery, dynastic marriage, and assassination  
— A campaign-replay Chronicle that plays your war back on the true historical ephemeris  
— The Persephone Awakening a Kuiper-belt moon visibly changes its orbit during play  
— Fog of war, comm hails from your bridge crew when they need decisions  
— 20 cinematic camera views, WASD flight, auto-orbit  
— Five original tracks scored for the game and more on the way  
The roadmap: five galaxies will eventually be included, each its own system of named worlds, history, and powers connected by gate networks once you've researched far enough. The current Sol system is the first. There will be substantially more content as that opens up and new factions, new music, new technology, new things in the deep dark that aren't where the charts said they would be.

Still in development. Comments and bug reports welcome

Altum: Sol Dominion - Early Development - Legacy Gaming Studios