Radion Bombs

But finally, in the year 2158, this all changed. Developed by an Erstean scientist named Alexis Lambert, the Erstean's unleashed their newest weapons: the Graviscalar Expanse Breaker machines, or more commonly known as Radion Bombs. These bombs utilized extra dimensional energy to devastating effect and were many times more powerful than nuclear bombs. And they were fired and detonated on the Earth below them. The Earth was devastated; the land died and the oceans became radiated and polluted. Humans died by the billions, and when it was all over, the population of Earth was less than a billion. And that number was expected to quickly dwindle. The western half of the Americas was completely destroyed. Eurasia was a shadow of its former self, with only Britain, Japan and parts of China making it out unscathed. Northern African and most of South Africa was no longer livable, and Australia no longer existed. ~ Guneva Season 2 Backstory Radion Bombs are the most devastating weapon ever created by man. As Alexis Lambert was killed in the initial BETA invasion, and nobody else could build them, there are a limited number remaining. After using many on the Earth and one on the BETA specifically to little avail, Erste had exactly 4 Radion Bombs remaining.

However, in the ERU's Anchorage Operation, the Nuada team uncovered an intact Radion Bomb that shouldn't have existed. This bomb's explosion was the impetus for the Nuada first traveling to the Other World.