I think the main difference in Dwarf Fortress and Rimworld is that the world happens to you, you have to respond to the events the game generates, while in No Man's Sky you happen to the world, you choose how to interact with it.
No Man's Sky is much more like Minecraft in that way, you have to make up your own goals, the game doesn't really prompt you in any way to do anything.
No Man's Sky is much more like Minecraft in that way, you have to make up your own goals, the game doesn't really prompt you in any way to do anything.