The Change

The World Changes to Fire and Ice

The Earth had been tilting for centuries until it reached a point where half the planet always faced towards the sun and half the planet always faced away from it
Silas Frostspark created the Flame Core and the Frost Core as humanity's last hope for surviving their extreme conditions
Silas Frostspark sends Ember Spark to the dark side with the Flame Core and Glacier Frost to the bright side with the Frost Core

Ember Spark and Glacier Frost activate the Flame Core and Frost Core, causing two opposing waves of extreme temperature to spread across Earth

The bright side is completely frozen over with no end to the harsh coldness
The dark side is scorched beyond recognition with no end to the extreme heat

Takes place in 8479 CE