Toradus:History

Once, long ago, our Earth was not the only inhabited
planet in the solar system. Toradus, our sister planet,
was larger than us. It was populated by many of the 
creatures that we hold in our myths and legends,
such as elves, dwarves, goblins(also called orcs),
dragons, werewolves, fire demons, nymphs, satyrs,
even slendermen. It was also more technologically
advanced, with cyborgs, AIs and more circuits than
the men knew what to do with(men also originated 
there as well).For over 400 million years, Earth's 
dinosaurs and Toradus's various peaceful species
lived in harmony.
That would soon change.
Around 66 million years ago, a nameless terror crept
into the minds of the dinosaurs. No one knew what it
was or where it came from, but within months anyone 
brave enough to go to the surface was massacred by 
dinos. Elven councils made in secret with men made 
a move: they decided to bring mammals to Earth.
This would serve as a bio-weapon and to succeed
the dinos when they were exterminated.
Read about the War for Earth Supremacy at its page.