Spaceport

[British_Petroleum]

Did anyone play Dune? the rts game. A late game building in Dune was a spaceport where you could order goods, and after a period of time a spaceship would arrive and supply these goods in exchange for spice. This would be fun to have in factorio. The spaceport should be an expensive late game building like the rocket silo, and instead of spice you could pay for the items with alien artifacts, as these are not found on any other planets. There could also be late game techs that you can't discover yourself, so you have to order the technology from the spaceport. This makes a lot more sense than the way technology works in vanilla factorio.

[British_Petroleum]

bump

[Adil]

There's a mod "Galactic trade" or somesuch. Have you viewed it?

[aubergine18]

There's a space market (apparently, I've not tried it myself) in this mod: https://mods.factorio.com/mods/kaueNP/NPUtils

There's also this market mod: https://mods.factorio.com/mods/binbinhfr/BlackMarket

[aubergine18]

Also, check out this interesting scenario mod: viewtopic.php?f=36&t=33120