So I'm sitting around thinkin and considering the old world. What could have happened? And then ideas came. Pieced some things together based on what tidbits of lore we've seen.
What we know about the calamity:
-A weapon caused it. I believe chemical in nature is what I remember reading (WWI era was big on chemical weapons).
-Before it, it was a WWI era world and in the process of a world war.
-There are at least half a dozen places now where they dig up or have fantastic old world technologies. Anglea, Arashi Desert, Chaladon, Paritan, etc
-The people were not all from the same places as they are now. Migration and relocation happened.
So first, lets consider the weapon since that is the thought that spawned the rest for me.
We know Anglea is an ice ball, but also is part of Firnfeld. Now for some reason northern Yesha isn't also an ice ball. We also know there are deserts all over the place. Some seem caused by the old war (craters), while others are questionable.
So lets think, how could chemical weapons have caused the current world? For the longest time I really couldn't think of a reason and I figured Muse was just off their rockers. Then I was considering, chemical reactions. There are reactions that can generate hot and cold. Now if we use our current world standards, I don't know if we could come up with something. But lets consider these airships and their "impossibilities" for existing.
These things shouldn't exist, too heavy. Unless of course we introduce another element in the air which makes them possible. I'm going to dub this the Valkyria element, or element V, since this is literally the same idea that Valkyria Chronicles used.
What if the old world was filled with an abundance of this Element V? Similar to Valkyria. It's the do everything, wonder element. Makes battleships fly/etc.
Now consider a world war happening. It's bloody, it's nasty, and it has gone on for too long. Both sides, if not more than two sides, would be looking for ways to gain the upper hand. Last ditch efforts, or superweapons.
What if...the solution was found to simply create a chain reaction in this element? If it is in everything, both air, water, and ground, then imagine a chemical bomb that could set off Element V and cause it to take another form.
That other form would be...ice. A solid. Why not heat? Well true why not heat? Maybe it was attempted but incinerating the world just wasn't the best idea. However, freezing it would preserve technology and cities. Plus maybe the weapon designer just wanted people to "cool off" due to the level of hatred at the time?
So lets say this is a massive freeze bomb that ignited and knocked out Anglea. What about the other nations under Anglea? Well....what is to say the freeze bomb stopped with Anglea? What if it really was a doomsday freeze bomb that was intended for the entire world? That means that at one time the entire world was an ice ball. But ice melts, and so lets assume it has been melting for awhile. Which would explain why the world is so small. This is just the part that has thawed.
But that's not all true is it? What about Chaladon? Chaladon was untouched by the war/etc. Now lets consider something, if the entire world was frozen and effectively reset, then why was Chaladon spared? Chaladon is home to very advanced tech too, could that have protected them? Or...Apologies Chaladon fans but there is an answer that takes this all into account as well as current isolationist standpoints. Chaladon did it.
That's right, Chaladon was the nation which created the weapon and thus would know exactly how to nullify the effects and preserve their country. And they got away with it too by continuing to keep isolationism as their policy. What villain wants nosy people snooping around their lair? So therefore, the theory is...Chaladon still has that weapon and they still have the defensive capability to nullify that weapon.
Why don't they use it again? Perhaps things haven't gotten bad enough yet. Lets also patch in another idea. This one comes from Skies of Arcadia...lol another Overworks game. Lets say Chaladon is the Silvites. They've been watching over the people rebuilding, the whole time with their finger on the button in case they decide to plunge themselves into world war once again.
But Chaladon does have contacts and helps some people? Well true. Lets think about it. The Arashi...the Guild named the desert Arashi but the people there hate the Guild. So lets consider the techs that the Arashi dig up which Chaladon, helps oversee. Remember, Chaladon doesn't like Anglea's abuse of technology. But if the Arashi are willing to accept help with it, meaning Chaladon confiscates anything really bad...why? Unless Chaladon and the people who settled in the Arashi have an old connection.
What if the Arashi desert was the result of the old war and it originally before that was lush lands with great cities? What if they were friends of Chaladon back then? Now lets consider them being apart of the war and getting wiped out. Perhaps this would have been a final straw that made Chaladon use the weapon.
Now their Fjordlander support...if we consider the Fjordlanders as the people who lived in silver moon lands (Skies of Arcadia), then there would be some past ties to Chaladon. Maybe they were Chaladonians who went to war and fought. Even in an isolationist country, there will be those who would want to get involved in the world war. America did this. We were isolationist and we still had those who secretly supported the war effort.
The Guild, perhaps they were one of the allies of the Arashi long ago but during the war they allowed the Arashi cities to be destroyed. Or maybe they didn't do enough to protect them. Maybe the ancient Guild were jerks and refused to take in the survivors too? Meaning the war in the past definitely had infighting happening among allies.
So what of Yesha? Well we know migrations happened and that the Yeshan people came from elsewhere. We know they are asian too. Cities down in Guild lands have very Japanese names. So lets consider that the world map looked very different. That the Yeshan and Arashi/Guild people were once closer but their cultures split. Or perhaps that when the Arashi cities were leveled, the survivors went two ways. One group went to Guild lands, the other to Yesha. Or perhaps the Yeshan people come from off the map? Yesha really is an issue here because it is hard to fit them as well as figure out what side they were on.
As far as the sides go. With the level of cities and tech concentrated in the north and the Arashi lands in the south, then Chaladon to the east...lets say the main front line was in the central area. If we look at the trail of devastation, it leads to Arashi lands. So lets say what brought about Chaladon deploying the V-bomb was a massive blitzkrieg that ended in the destruction of the main capital of the southern alliances.
If Chaladon was in any way sympathetic to the southern factions then perhaps this was enough for them to gain support from their people in deploying it. Also if most of the population was wiped out then they could afford to take in some and then seal off the island to use the weapon. Any hesitation would have ceased. By this time they most certainly would have considered the blitz a genocide and seen the true nature of the northern factions.
Thus that puts Anglea as more of it's own empire. However, remember, not all of the map is shown. Perhaps Anglea consisted of many other nations that are still in ice and haven't thawed yet. Either way, Anglea was possibly winning the war which led Chaladon to use it's doomsday weapon to stop it.
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Anglea was a bunch of murdering dicks and Chaladon the ultimate bond villain with the doomsday device.
So the whole ancient plot of GOIO is a mix of both Valkyria Chronicles and Skies of Arcadia. If true this means, their original writer really was freaken awesome!