How to make a high tech open world game in space with being able to explore nothing but few planets?
This is how I would make it, in a certain part of universe there is a area where wormholes randomly open up and swallows spaceships. To justify why people are using that part of space lets say its a area that is rich with resources and number of ships lost per year is in acceptable number.
Now the ships swallowed are all transported to a far away star system and exit very close a large planet where its gravity pull always crashes them onto the planet. This explains the isolation of the system from lines of communications, crash landed ships are unable to fly and leave the system, escape pods, shuttles, and smaller makeshift ships lack engines for interstellar voyages and can only travel in the system itself.
Large number of ships across of number of years crashing means different human factions with different state of organized society. You can have a dominant bandit faction which controls the planet and is actively preventing anyone making or fixing a ship capable of travel beyond the system or making a powerful enough communication array as they enjoy being the overlords of this place.
The planet itself should be completely handcrafted with different biomes, native alien fauna and maybe even ruins/remains of ancient alien civilizations. You can even put a mystery that the wormholes are made by ancient alien machine programmed to bring ships to a planet and the part of the main quest revolves about finding out why.
Planets, moons, asteroids in the system are not fit for human life but are rich in valuable resources so places to build mines, outposts, slave workcamps etc.
You have a single large handcrafted planet, multiple smaller generic ones, multiple human factions, dangerous alien creatures, space combat vs bandits in makeshift ships.
This is how I would make it, in a certain part of universe there is a area where wormholes randomly open up and swallows spaceships. To justify why people are using that part of space lets say its a area that is rich with resources and number of ships lost per year is in acceptable number.
Now the ships swallowed are all transported to a far away star system and exit very close a large planet where its gravity pull always crashes them onto the planet. This explains the isolation of the system from lines of communications, crash landed ships are unable to fly and leave the system, escape pods, shuttles, and smaller makeshift ships lack engines for interstellar voyages and can only travel in the system itself.
Large number of ships across of number of years crashing means different human factions with different state of organized society. You can have a dominant bandit faction which controls the planet and is actively preventing anyone making or fixing a ship capable of travel beyond the system or making a powerful enough communication array as they enjoy being the overlords of this place.
The planet itself should be completely handcrafted with different biomes, native alien fauna and maybe even ruins/remains of ancient alien civilizations. You can even put a mystery that the wormholes are made by ancient alien machine programmed to bring ships to a planet and the part of the main quest revolves about finding out why.
Planets, moons, asteroids in the system are not fit for human life but are rich in valuable resources so places to build mines, outposts, slave workcamps etc.
You have a single large handcrafted planet, multiple smaller generic ones, multiple human factions, dangerous alien creatures, space combat vs bandits in makeshift ships.