One thing we know about Phantasy Star III is that when you begin it feels like your taking place in a game that would be set in the middle ages, at least until you learn of the cyborgs. But as we know the kingdoms were based off ancient times. So what were the scientists thinking? Depending on where you look at the timeline, it takes place either 1000 years thus taking place with Phantasy Star IV, or 1000 years after Phantasy Star IV ends. So in so many centuries the people of Landen, Cille, and the others should have developed from living in a kingdom into a more modern style city much like the ones on Palma and Motavia.
On a sidenote just to not make another topic. Many of the worldships launched from Palma prior to its explosion, so my question is the domes of the Alisa III are pretty large, so lets just say that the domes are a bit larger then our Earths eastern side of the world, so where would the ships be developed on the planet, how large was Palma really, did they use all their natural resources, slowly destroying the planet just to make the ships able to travel into space.
And one more thing, what kind of fuel do the ships run on? If they're slowly floating through space to find a habitable planet then they must have enough resources to fuel the ship for over 1000 years. If its just floating and you have one random guy behind a steering wheel then when he sees a planet, takes the ship down to it and its uninhabitable and has 0 resources to get the ship back into space, what do the people of the Alisa III do? Ok enough ranting from me.